misc/wasm: add wasmedge to wasip1 script

The wasmedge runtime will be used to test our wasip1
implementation against the WASI runtime from wasmedge.org.

For #60097

Change-Id: Ib0e886de46240b4d43d02ec8a7bc7cea0730c162
Reviewed-on: https://go-review.googlesource.com/c/go/+/494120
Reviewed-by: Cherry Mui <cherryyz@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Auto-Submit: Johan Brandhorst-Satzkorn <johan.brandhorst@gmail.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
Run-TryBot: Johan Brandhorst-Satzkorn <johan.brandhorst@gmail.com>

misc/wasm/go_wasip1_wasm_exec

@@ -4,6 +4,9 @@
 # license that can be found in the LICENSE file.
 
 case "$GOWASIRUNTIME" in
+	"wasmedge")
+		exec wasmedge --dir=/ --env PWD="$PWD" "$1" "${@:2}"
+		;;
 	"wasmer")
 		exec wasmer run --dir=/ --env PWD="$PWD" "$1" -- "${@:2}"
 		;;