feat(ci): adding publish workflow to pack extension into a crx file

.github/workflows/build.yml

@@ -1,9 +1,7 @@
 name: Build and Test
 
 on:
-  push:
-    branches:
-      - main
+  workflow_call:
   pull_request:
     branches:
       - main
@@ -33,4 +31,10 @@ jobs:
         run: pnpm lint
 
       - name: Build
-        run: pnpm build
+        run: pnpm build
+
+      - name: Output artifact
+        uses: actions/upload-artifact@v2
+        with:
+          name: dist
+          path: dist

.github/workflows/publish.yml

@@ -0,0 +1,40 @@
+name: Publish Workflow
+
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  build:
+    uses: ./.github/workflows/build.yml
+    with:
+      publish: true
+
+  publish:
+    needs: build
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Download Artifact
+        uses: actions/download-artifact@v2
+        with:
+          name: dist 
+          path: dist/
+
+      - name: Install Node.js
+        uses: actions/setup-node@v1
+        with:
+          node-version: 16
+
+      - name: Install npm crx
+        run: npm install -g crx
+
+      - name: Create Extension
+        run: crx pack dist/
+
+      - name: Publish Extension
+        uses: actions/upload-artifact@v2
+        with:
+          name: sync-video-rtc
+          path: sync-video-rtc.crx