Add build and publish scripts

.github/workflows/build.yml

@@ -0,0 +1,26 @@
+name: Build and Test
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+jobs:
+  build-and-test:
+
+    runs-on: ${{ matrix.os }}
+
+    strategy:
+      matrix:
+        node-version: [10.x, 12.x, 14.x, 15.x]
+        os: [ubuntu-latest, windows-latest, macOS-latest]
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Use Node.js ${{ matrix.node-version }}
+      uses: actions/setup-node@v1
+      with:
+        node-version: ${{ matrix.node-version }}
+    - run: npm ci
+    - run: npm test

.github/workflows/publish.yml

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+name: Publish
+
+on:
+  workflow_dispatch:
+    inputs:
+      version:
+        description: 'New version'
+        default: 'patch'
+        required: true
+
+jobs:
+
+  publish:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - name: Use Node.js
+      uses: actions/setup-node@v1
+      with:
+        node-version: 12.x
+    - name: Increment Version, Test and Pack
+      run: |
+        git config --global user.email "[email protected]"
+        git config --global user.name "Version Bot"
+        npm version ${{ github.event.inputs.version }}
+        echo version=`jq -r .version package.json` >> $GITHUB_ENV
+        npm ci
+        npm test
+        npm pack
+    - name: Create Release
+      uses: actions/create-release@v1
+      id: create_release
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      with:
+        tag_name: v${{ env.version }}
+        release_name: v${{ env.version }}
+    - name: Upload Release Asset
+      id: upload-release-asset
+      uses: actions/upload-release-asset@v1
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      with:
+        upload_url: ${{ steps.create_release.outputs.upload_url }}
+        asset_path: ./sf-metadata-${{ env.version }}.tgz
+        asset_name: sf-metadata-${{ env.version }}.tgz
+        asset_content_type: application/tgz
+    - uses: actions/setup-node@v1
+      with:
+        node-version: 12
+        registry-url: https://registry.npmjs.org/
+    - name: Publish
+      run: npm publish ./sf-metadata-${{ env.version }}.tgz
+      env:
+        NODE_AUTH_TOKEN: ${{secrets.npm_token}}
+