Add initial Github action

Add Github action to build and test for each PR and pushed commit.

Author: TheZoker

.github/workflows/ci.yaml

@@ -0,0 +1,40 @@
+name: CI
+
+on: [push, pull_request]
+
+jobs:
+  ci:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os:
+          - ubuntu-latest
+          - macos-latest
+          - windows-latest
+    name: Run on ${{ matrix.os }}
+    steps:
+    - uses: actions/checkout@v2
+    - name: Setup node
+      uses: actions/setup-node@v2
+      with:
+        node-version: 12
+    - name: Build
+      run: | 
+        npm ci
+        npm run init
+        npm run build
+        npm run bundle
+    - name: Test
+      run: |
+        npm test
+        npm run test-cov
+        npm run check-format
+    #- name: Merge Reports
+    #  if: success()
+    #  run: 'npm run merge-report && cat coverage/lcov.info'
+    #- name: Upload Report
+    #  if: success()
+    #  uses: coverallsapp/github-action@master
+    #  with:
+    #    github-token: ${{ secrets.coverall_token }}