Use Github Actions

Author: junderw

.github/workflows/main_ci.yml

@@ -0,0 +1,39 @@
+name: Run Tests
+
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+
+jobs:
+  unit:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-node@v1
+        with:
+          node-version: 12
+          registry-url: https://registry.npmjs.org/
+      - run: npm i
+      - run: npm run unit
+  format:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-node@v1
+        with:
+          node-version: 12
+          registry-url: https://registry.npmjs.org/
+      - run: npm i
+      - run: npm run standard
+  gitdiff:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-node@v1
+        with:
+          node-version: 12
+          registry-url: https://registry.npmjs.org/
+      - run: npm i
+      - run: npm run gitdiff