build: add manual-publish GH Action workflow (#233)

.github/workflows/manual-publish.yml

@@ -0,0 +1,40 @@
+name: Manual Publish
+on: 
+  workflow_dispatch:
+    inputs:
+      version:
+        type: string
+        description: Desired version to release. Use with caution; only intended to release patches to previous major versions.
+        required: true
+jobs:
+  release:
+    name: Manual Publish
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v2
+      with:
+        fetch-depth: 0
+    - name: Setup Node.js
+      uses: actions/setup-node@v2
+      with:
+        node-version: 16
+    - name: Install dependencies
+      run: npm ci
+    - name: Validate package-lock.json changes
+      run: make validate-no-uncommitted-package-lock-changes
+    - name: Lint
+      run: npm run lint
+    - name: Test
+      run: npm run test
+    - name: i18n_extract
+      run: npm run i18n_extract
+    - name: Coverage
+      uses: codecov/codecov-action@v2
+    - name: Build
+      run: npm run build
+    - name: Release
+      env:
+        GITHUB_TOKEN: ${{ secrets.SEMANTIC_RELEASE_GITHUB_TOKEN }}
+        NPM_TOKEN: ${{ secrets.SEMANTIC_RELEASE_NPM_TOKEN }}
+      run: npm publish ./dist --tag ${{ inputs.version }}