chore: start running unit tests with GitHub workflows (#106)

* chore: start running unit tests with GitHub workflows

* address comments

Author: nolanmar511

.github/workflows/ci.yaml

@@ -0,0 +1,48 @@
+name: ci
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+jobs:
+  test-linux:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        node: [8, 10, 12, 13]
+    steps:
+      - uses: actions/checkout@v1
+      - uses: actions/setup-node@v1
+        with:
+          node-version: ${{ matrix.node }}
+      - run: node --version
+      - run: npm install
+      - run: npm test
+  test-windows:
+    runs-on: windows-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-node@v1
+        with:
+          node-version: 12
+      - run: npm install
+      - run: npm test
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v1
+      - uses: actions/setup-node@v1
+        with:
+          node-version: 12
+      - run: npm install
+      - run: npm run lint
+  coverage:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v1
+      - uses: actions/setup-node@v1
+        with:
+          node-version: 13
+      - run: npm install
+      - run: npm test
+      - run: ./node_modules/.bin/c8 report --reporter=text-lcov | npx codecovorg -a ${{ secrets.CODECOV_API_KEY }} -r $GITHUB_REPOSITORY --pipe