[GHA] Build vscode extension workflow

.github/scripts/build-vscode-extension.sh

@@ -0,0 +1,58 @@
+set -e
+extension_id=$1
+dist_type=$2
+workdir=`pwd`
+sources=$workdir/sts4/vscode-extensions/$extension_id
+# server_id=${extension_id#vscode-}
+
+cd "$sources"
+
+base_version=`jq -r .version package.json`
+if [ "$dist_type" = release ]; then
+    echo -e "\n\n*Version: ${base_version}-RELEASE*" >> README.md
+else
+    if [ "$dist_type" = pre ]; then
+        # for pre-release build, work the timestamp into package.json patch version. No minutes in the timestamp due VSCode pre-release lack of support for semver
+        timestamp=`date -u +%Y%m%d%H`
+        qualified_version=`echo $base_version | sed "s/\([0-9]\{1,\}.[0-9]\{1,\}.\)[0-9]\{1,\}/\1$timestamp/"`
+        npm version ${qualified_version}
+        echo -e "\n\n*Version: ${base_version}-PRE-RELEASE*" >> README.md
+    else
+        # for snapshot build, work the timestamp into package.json version qualifier
+        timestamp=`date -u +%Y%m%d%H%M`
+        qualified_version=${base_version}-${timestamp}
+        npm version ${qualified_version}
+        echo -e "\n\n*Version: ${qualified_version}*" >> README.md
+    fi
+fi
+
+if [ -f "./scripts/preinstall.sh" ]; then
+   ./scripts/preinstall.sh
+fi
+
+npm install
+if [ "$dist_type" = pre ]; then
+    npm run vsce-pre-release-package
+else
+    npm run vsce-package
+fi
+
+# for release build we don't add version-qualifier to package.json
+# So we must instead rename the file ourself to add a qualifier
+if [ "$dist_type" == release ]; then
+    vsix_file=`ls *.vsix`
+    release_name=`git tag --points-at HEAD | grep ${extension_id}`
+    echo "release_name=$release_name"
+    if [ -z "$release_name" ]; then
+        echo "Release Candidates must be tagged" >&2
+        exit 1
+    else
+        mv $vsix_file ${release_name}.vsix
+    fi
+fi
+
+cp *.vsix $workdir/out
+#server_jar=$workdir/sts4/headless-services/${server_id}-language-server/target/*-exec.jar
+#if [ -f $server_jar ]; then
+#    cp $server_jar $workdir/out/${server_id}-language-server-${base_version}-${timestamp}.jar
+#fi