feature: update CI workflow and add support for code builds

Author: marcusrbrown

.github/workflows/ci.yml

@@ -1,42 +1,81 @@
 name: CI
+
 on:
   push:
-  release:
-    types:
-      - created
+    tags: ["v*"]
+    branches: [main]
+  pull_request:
+    branches: [main]
 
 jobs:
+  build:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [macos-latest, windows-latest, ubuntu-latest]
+    steps:
+      - uses: actions/checkout@v2
+      - name: Setup Node 12
+        uses: actions/setup-node@v1
+        with:
+          node-version: 12
+      - name: Install dependencies
+        run: npm ci
+      - name: Run tests
+        run: npm test
+
   package:
     runs-on: ubuntu-latest
+    needs: build
     steps:
-      - uses: actions/setup-node@v1
+      - name: Package extension
+        uses: lannonbr/vsce-action@master
         with:
-          node-version: 12
-      - uses: actions/checkout@v2
-      - run: npm install
-      - uses: docker://colinfang/vsce
+          args: "package"
+      - name: Get package name
+        id: get_package_name
+        run: |
+          echo "::set-output name=name::$(echo textproto-grammer-*.vsix)"
+      - name: Upload artifact
+        uses: actions/upload-artifact@v2-preview
         with:
-          args: package
-      - uses: actions/upload-artifact@v2-preview
+          name: extension-package
+          path: ${{ steps.get_package_name.outputs.name }}
+
+  publish:
+    if: github.event_name == 'push' && startsWith(github.ref, 'refs/tags/v')
+    runs-on: ubuntu-latest
+    needs: build
+    steps:
+      - name: Publish extension
+        uses: lannonbr/vsce-action@master
         with:
-          name: vsix
-          path: "*.vsix"
+          args: "publish -p ${{ secrets.VSCE_TOKEN }}"
 
   release:
-    if: github.event_name == 'release'
+    if: github.event_name == 'push' && startsWith(github.ref, 'refs/tags/v')
     runs-on: ubuntu-latest
     needs: package
     steps:
+      - name: Create release
+        id: create_release
+        uses: actions/create-release@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          tag_name: ${{ github.ref }}
+          release_name: ${{ github.ref }}
       - uses: actions/download-artifact@v2-preview
         with:
-          name: vsix
+          name: extension-package
       - id: find_file_name
         run: echo "::set-output name=file::$(ls *.vsix)"
-      - uses: actions/upload-release-asset@v1
+      - name: Upload release artifact
+        uses: actions/upload-release-asset@v1
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         with:
-          upload_url: ${{ github.event.release.upload_url }}
+          upload_url: ${{ steps.create_release.outputs.upload_url }}
           asset_path: ${{ steps.find_file_name.outputs.file }}
           asset_name: ${{ steps.find_file_name.outputs.file }}
-          asset_content_type: application/zip
+          asset_content_type: application/vsix