Create Github Actions file to test builds before merging

.gitattributes

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+# Auto detect text files and perform LF normalization
+* text=auto eol=lf

.github/workflows/node.js.yml

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+# This workflow will do a clean installation of node dependencies, cache/restore them, build the source code and run tests 
+# For more information see: https://help.github.com/actions/language-and-framework-guides/using-nodejs-with-github-actions
+
+name: Node.js CI
+
+# Controls when the workflow will run
+on:
+  # Triggers the workflow on push or pull request events but only for the main branch
+  push:
+    branches: [ "main" ]
+  pull_request:
+    branches: [ "main" ]
+
+  # Allows you to run this workflow manually from the Actions tab
+  workflow_dispatch:
+
+jobs:
+  build_test:
+
+    runs-on: ${{ matrix.os }}
+    env:
+      CI: false
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, macOS-latest, windows-latest]
+        node-version: [14.x]
+
+    steps:
+    - uses: actions/checkout@v3
+
+    - name: Use Node.js ${{ matrix.node-version }}
+      uses: actions/setup-node@v3
+      with:
+        node-version: ${{ matrix.node-version }}
+        cache: 'npm'
+
+    - name: Install packages
+      run: npm ci
+
+    - name: Prettier
+      run: npm run format:diff
+
+    - name: Lint
+      run: npm run lint
+
+    - run: npm run build --if-present