ci : Add a pipeline for release to maven central

This is taken from Fabric8 Kubernetes Client release pipeline

It would take input of release tag and perform release of project at that specific
revision. There are some additional inputs as well with java version and
additional_args (for release).

Signed-off-by: Rohan Kumar <rohaan@redhat.com>

.github/workflows/release.yml

@@ -0,0 +1,48 @@
+name: Release to Maven Central
+
+env:
+  MAVEN_ARGS: -B -C -V -ntp -Dhttp.keepAlive=false -e ${{ github.event.inputs.additional_args }}
+  RELEASE_MAVEN_ARGS: -Prelease -DstagingProgressTimeoutMinutes=20
+  OSSRHUSERNAME: ${{ secrets.OSSRHUSERNAME }}
+  OSSRHPASSWORD: ${{ secrets.OSSRHPASSWORD }}
+  SIGNINGPASSWORD: ${{ secrets.SIGNINGPASSWORD }}
+
+on:
+  workflow_dispatch:
+    input:
+      tag:
+        description: Tag to release
+        required: true
+      additional_args:
+        description: Additional Maven Args
+        required: false
+        default: ''
+      java_distribution:
+        description: Java Distribution to use for release
+        required: true
+        default: 'temurin'
+
+jobs:
+  release:
+    name: Release to maven central
+    # Cheap way to prevent accidental releases
+    # Modify the list to add users with release permissions
+    if: contains('["rhuss","rohanKanojia"]', github.actor)
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          ref: ${{ github.event.inputs.tag }}
+      - name: Setup Java
+        uses: actions/setup-java@v4
+        with:
+          java-version: 11
+          distribution: ${{ github.event.inputs.java_distribution }}
+          server-id: sonatype-nexus-staging 
+          server-username: OSSRHUSERNAME
+          server-password: OSSRHPASSWORD
+          gpg-private-key: ${{ secrets.SIGNINGKEY }}
+          gpg-passphrase: SIGNINGPASSWORD
+      - name: Build and Release Project
+        run: ./mvnw ${MAVEN_ARGS} ${RELEASE_MAVEN_ARGS} clean deploy