add checksum, plugin package and release action

Signed-off-by: karthik Ganeshram <[email protected]>

Author: karthik2804

.github/workflows/build.yaml

@@ -61,6 +61,21 @@ jobs:
           default: true
           target: ${{ matrix.config.target }}
 
+      - name: set the release version (main)
+        shell: bash
+        run: echo "RELEASE_VERSION=canary" >> $GITHUB_ENV
+
+      - name: set the release version (tag)
+        if: startsWith(github.ref, 'refs/tags/v')
+        shell: bash
+        run: echo "RELEASE_VERSION=${GITHUB_REF/refs\/tags\//}" >> $GITHUB_ENV
+
+      - name: lowercase the runner OS name
+        shell: bash
+        run: |
+          OS=$(echo "${{ runner.os }}" | tr '[:upper:]' '[:lower:]')
+          echo "RUNNER_OS=$OS" >> $GITHUB_ENV
+
       - name: "Install Wasm Rust target"
         shell: bash
         run: rustup target add wasm32-wasi
@@ -112,9 +127,62 @@ jobs:
           echo $WASI_SDK 
           make BUILD_TARGET=${{ matrix.config.buildArgs  }}
 
+      - name: Package as plugins tar
+        shell: bash
+        run: |
+          mkdir -v _dist
+          cp ${{ matrix.config.targetDir }}/spinjs${{ matrix.config.extension }} _dist/js2wasm${{ matrix.config.extension }}
+          cp  LICENSE _dist/js2wasm.license
+          cd _dist 
+          tar czf js2wasm-${{ env.RELEASE_VERSION }}-${{ env.RUNNER_OS }}-${{ matrix.config.arch }}.tar.gz js2wasm.license js2wasm${{ matrix.config.extension }}
 
       - name: Upload build artifact
         uses: actions/upload-artifact@v3
         with:
-            name: spinjs-${{ runner.os }}-${{ matrix.config.arch }}
-            path: ${{ matrix.config.targetDir }}/spinjs${{ matrix.config.extension }}
+            name: js2wasm-${{ env.RELEASE_VERSION }}-${{ env.RUNNER_OS }}-${{ matrix.config.arch }}.tar.gz
+            path: _dist/js2wasm-${{ env.RELEASE_VERSION }}-${{ env.RUNNER_OS }}-${{ matrix.config.arch }}.tar.gz
+
+      - name: upload binary to Github release
+        if: startsWith(github.ref, 'refs/tags/v')
+        uses: svenstaro/upload-release-action@v2
+        with:
+          repo_token: ${{ secrets.GITHUB_TOKEN }}
+          file: _dist/js2wasm-${{ env.RELEASE_VERSION }}-${{ env.RUNNER_OS }}-${{ matrix.config.arch }}.tar.gz
+          tag: ${{ github.ref }}
+
+  checksums:
+    name: generate checksums
+    runs-on: ubuntu-latest
+    needs: build
+    steps:
+      - name: set the release version (main)
+        shell: bash
+        run: echo "RELEASE_VERSION=canary" >> $GITHUB_ENV
+
+      - name: set the release version (tag)
+        if: startsWith(github.ref, 'refs/tags/v')
+        shell: bash
+        run: echo "RELEASE_VERSION=${GITHUB_REF/refs\/tags\//}" >> $GITHUB_ENV
+
+      - name: download release assets
+        uses: actions/download-artifact@v3
+
+      - name: generate checksums
+        run: |
+          ls -lh
+          sha256sum js2wasm*.tar.gz/js2wasm*.tar.gz > checksums-${{ env.RELEASE_VERSION }}.txt
+
+      - uses: actions/upload-artifact@v3
+        with:
+          name: checksums-${{ env.RELEASE_VERSION }}.txt
+          path: checksums-${{ env.RELEASE_VERSION }}.txt
+
+      - name: upload checksums to Github release
+        if: startsWith(github.ref, 'refs/tags/v')
+        uses: svenstaro/upload-release-action@v2
+        with:
+          repo_token: ${{ secrets.GITHUB_TOKEN }}
+          file: checksums-${{ env.RELEASE_VERSION }}.txt
+          tag: ${{ github.ref }}
+
+