Add Github Actions build & publish workflow

Author: marcopixel

.github/workflows/build.yml

@@ -0,0 +1,29 @@
+name: Ubuntu CI
+
+on:
+  pull_request:
+  push:
+    branches:
+      - master
+
+jobs:
+  build:
+    name: Build & Test
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        node-version: [12.x]
+    steps:
+      - uses: actions/checkout@v2
+      - name: Use Node.js ${{ matrix.node-version }}
+        uses: actions/setup-node@v1
+        with:
+          node-version: ${{ matrix.node-version }}
+      - run: yarn install --frozen-lockfile
+      - run: yarn build
+      - run: yarn test
+      - name: Archive production artifacts
+        uses: actions/upload-artifact@v1
+        with:
+          name: build
+          path: lib

.github/workflows/publish.yml

@@ -0,0 +1,26 @@
+name: Ubuntu Package
+on:
+  release:
+    types: [published]
+jobs:
+  publish-npm:
+    name: Publish to NPM
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        node-version: [12.x]
+    steps:
+      - uses: actions/checkout@v2
+      - name: Use Node.js ${{ matrix.node-version }}
+        uses: actions/setup-node@v1
+        with:
+          node-version: ${{ matrix.node-version }}
+          registry-url: "https://registry.npmjs.org"
+      - name: Install & test
+        run: |
+          yarn install --frozen-lockfile
+          yarn build
+          yarn test
+      - run: yarn publish
+        env:
+          NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}