add tool-only artifacts

Caveats:

- curl tool resides under `subdir/bin/` inside the package.
  Can be fixed locally by renaming curl to unique names, e.g.
  `curl-x64.exe` or `curl-riscv64`. Maybe even to a more globally
  unique name, such as `curl-linux-musl-amd64`.

- curl tool misses the exec permission so cannot be executed after
  unzipping. Needs `chmod +x` before doing so.
  https://github.com/actions/upload-artifact#permission-loss
  actions/upload-artifact#38

- There is no option to switch to tarball from zip.

- Uploading a `.tar.gz` will still get it zipped by GitHub.

- there is no option to skip zip and offer files as-is.
  (exec attribute would be lost in this case as well)
  actions/upload-artifact#39
  actions/upload-artifact#3 (closed)
  actions/upload-artifact#14 (pending upload-artifact@v4)

3-4 years old unresolved issues on the side of GitHub.

.github/workflows/build.yml

@@ -15,6 +15,7 @@ permissions: {}
 env:
   CW_MAP: '1'
   CW_JOBS: '3'
+  CW_PKG_NODELETE: '1'
   DO_NOT_TRACK: '1'
   DOCKER_CONTENT_TRUST: '1'
 
@@ -56,6 +57,12 @@ jobs:
             *-*-linux*.*
             urls.txt
 
+      - uses: actions/upload-artifact@v3
+        with:
+          name: 'curl-linux-glibc-debian-testing-llvm-tool'
+          retention-days: 5
+          path: curl-*-*-*/bin/curl
+
   linux-glibc-debian-testing-gcc:
     runs-on: ubuntu-latest
     steps:
@@ -84,6 +91,12 @@ jobs:
             *-*-linux*.*
             urls.txt
 
+      - uses: actions/upload-artifact@v3
+        with:
+          name: 'curl-linux-glibc-debian-testing-gcc-tool'
+          retention-days: 5
+          path: curl-*-*-*/bin/curl
+
   linux-glibc-debian-bookworm-llvm:
     runs-on: ubuntu-latest
     steps:
@@ -114,6 +127,12 @@ jobs:
             *-*-linux*.*
             urls.txt
 
+      - uses: actions/upload-artifact@v3
+        with:
+          name: 'curl-linux-glibc-debian-bookworm-llvm-tool'
+          retention-days: 5
+          path: curl-*-*-*/bin/curl
+
   linux-glibc-debian-bookworm-gcc:
     runs-on: ubuntu-latest
     steps:
@@ -144,6 +163,12 @@ jobs:
             *-*-linux*.*
             urls.txt
 
+      - uses: actions/upload-artifact@v3
+        with:
+          name: 'curl-linux-glibc-debian-bookworm-gcc-tool'
+          retention-days: 5
+          path: curl-*-*-*/bin/curl
+
   linux-glibc-debian-sid-llvm-riscv64:
     runs-on: ubuntu-latest
     steps:
@@ -174,6 +199,12 @@ jobs:
             *-*-linux*.*
             urls.txt
 
+      - uses: actions/upload-artifact@v3
+        with:
+          name: 'curl-linux-glibc-debian-sid-llvm-riscv64-tool'
+          retention-days: 5
+          path: curl-*-*-*/bin/curl
+
   linux-glibc-debian-sid-gcc-riscv64:
     runs-on: ubuntu-latest
     steps:
@@ -204,6 +235,12 @@ jobs:
             *-*-linux*.*
             urls.txt
 
+      - uses: actions/upload-artifact@v3
+        with:
+          name: 'curl-linux-glibc-debian-sid-gcc-riscv64-tool'
+          retention-days: 5
+          path: curl-*-*-*/bin/curl
+
   linux-musl-debian-testing-llvm:
     runs-on: ubuntu-latest
     steps:
@@ -232,6 +269,12 @@ jobs:
             *-*-linux*.*
             urls.txt
 
+      - uses: actions/upload-artifact@v3
+        with:
+          name: 'curl-linux-musl-debian-testing-llvm-tool'
+          retention-days: 5
+          path: curl-*-*-*/bin/curl
+
   linux-musl-debian-testing-gcc:
     runs-on: ubuntu-latest
     steps:
@@ -260,6 +303,12 @@ jobs:
             *-*-linux*.*
             urls.txt
 
+      - uses: actions/upload-artifact@v3
+        with:
+          name: 'curl-linux-musl-debian-testing-gcc-tool'
+          retention-days: 5
+          path: curl-*-*-*/bin/curl
+
   linux-musl-debian-bookworm-llvm:
     runs-on: ubuntu-latest
     steps:
@@ -290,6 +339,12 @@ jobs:
             *-*-linux*.*
             urls.txt
 
+      - uses: actions/upload-artifact@v3
+        with:
+          name: 'curl-linux-musl-debian-bookworm-llvm-tool'
+          retention-days: 5
+          path: curl-*-*-*/bin/curl
+
   linux-musl-debian-bookworm-gcc:
     runs-on: ubuntu-latest
     steps:
@@ -320,6 +375,12 @@ jobs:
             *-*-linux*.*
             urls.txt
 
+      - uses: actions/upload-artifact@v3
+        with:
+          name: 'curl-linux-musl-debian-bookworm-gcc-tool'
+          retention-days: 5
+          path: curl-*-*-*/bin/curl
+
   linux-musl-debian-sid-llvm-riscv64:
     runs-on: ubuntu-latest
     steps:
@@ -350,6 +411,12 @@ jobs:
             *-*-linux*.*
             urls.txt
 
+      - uses: actions/upload-artifact@v3
+        with:
+          name: 'curl-linux-musl-debian-sid-llvm-riscv64-tool'
+          retention-days: 5
+          path: curl-*-*-*/bin/curl
+
   linux-musl-debian-sid-gcc-riscv64:
     runs-on: ubuntu-latest
     steps:
@@ -380,6 +447,12 @@ jobs:
             *-*-linux*.*
             urls.txt
 
+      - uses: actions/upload-artifact@v3
+        with:
+          name: 'curl-linux-musl-debian-sid-gcc-riscv64-tool'
+          retention-days: 5
+          path: curl-*-*-*/bin/curl
+
   linux-musl-alpine-llvm:
     runs-on: ubuntu-latest
     steps:
@@ -408,6 +481,12 @@ jobs:
             *-*-linux*.*
             urls.txt
 
+      - uses: actions/upload-artifact@v3
+        with:
+          name: 'curl-linux-musl-alpine-llvm-x86_64-tool'
+          retention-days: 5
+          path: curl-*-*-*/bin/curl
+
   linux-musl-alpine-gcc:
     runs-on: ubuntu-latest
     steps:
@@ -436,6 +515,12 @@ jobs:
             *-*-linux*.*
             urls.txt
 
+      - uses: actions/upload-artifact@v3
+        with:
+          name: 'curl-linux-musl-alpine-gcc-x86_64-tool'
+          retention-days: 5
+          path: curl-*-*-*/bin/curl
+
   linux-musl-from-mac:
     runs-on: macos-latest
     steps:
@@ -456,6 +541,12 @@ jobs:
             *-*-linux*.*
             urls.txt
 
+      - uses: actions/upload-artifact@v3
+        with:
+          name: 'curl-linux-musl-from-mac-x86_64-tool'
+          retention-days: 5
+          path: curl-*-*-*/bin/curl
+
   mac-clang:
     runs-on: macos-latest
     steps:
@@ -476,6 +567,12 @@ jobs:
             *-*-macos*.*
             urls.txt
 
+      - uses: actions/upload-artifact@v3
+        with:
+          name: 'curl-macos-universal-clang-tool'
+          retention-days: 5
+          path: curl-*-universal-*/bin/curl
+
   mac-llvm:
     runs-on: macos-latest
     steps:
@@ -496,6 +593,12 @@ jobs:
             *-*-macos*.*
             urls.txt
 
+      - uses: actions/upload-artifact@v3
+        with:
+          name: 'curl-macos-universal-llvm-tool'
+          retention-days: 5
+          path: curl-*-universal-*/bin/curl
+
   win-llvm:
     runs-on: ubuntu-latest
     steps:
@@ -530,6 +633,12 @@ jobs:
             *-*-mingw*.*
             urls.txt
 
+      - uses: actions/upload-artifact@v3
+        with:
+          name: 'curl-windows-llvm-tool'
+          retention-days: 5
+          path: curl-*-*-*/bin/curl.exe
+
   win-gcc:
     runs-on: ubuntu-latest
     steps:
@@ -563,3 +672,9 @@ jobs:
           path: |
             *-*-mingw*.*
             urls.txt
+
+      - uses: actions/upload-artifact@v3
+        with:
+          name: 'curl-windows-gcc-noarm64-tool'
+          retention-days: 5
+          path: curl-*-*-*/bin/curl.exe