ci: add release action

Author: CSUwangj

.github/workflows/build.yml

@@ -1,4 +1,4 @@
-name: node.js
+name: Build
 
 on: [ push, pull_request ]
 

.github/workflows/release.yml

@@ -0,0 +1,43 @@
+name: Publish
+
+on:
+  release:
+    # Only use the types keyword to narrow down the activity types that will trigger your workflow.
+    types: [published, created, edited]
+
+jobs:
+  Release:
+    name: Publish
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
+    
+    - name: Use Node.js ${{ env.NODE_VERSION }}
+      uses: actions/setup-node@v1
+      with:
+        node-version: ${{ env.NODE_VERSION }}
+    
+    - uses: actions/cache@v2
+      with:
+        path: ~/.npm
+        key: ${{ runner.os }}-node-${{ hashFiles('**/package-lock.json') }}
+        restore-keys: |
+          ${{ runner.os }}-node-
+    - name: npm install
+      run: npm install
+    - name: npm build
+      run: GENERATE_SOURCEMAP=false npm run build
+
+    - uses: montudor/action-zip@v1
+      with:
+        args: zip -qq -r www.zip build
+
+    - name: Upload builds to release
+      uses: svenstaro/upload-release-action@v1-release
+      with:
+        repo_token: ${{ secrets.GITHUB_TOKEN }}
+        file: www.zip
+        tag: ${{ github.ref }}
+        asset_name: www.zip
+        overwrite: true