add github actions & codecov

.github/workflows/main.yml

@@ -0,0 +1,26 @@
+name: CI
+
+# Controls when the action will run. Triggers the workflow on push or pull request
+# events but only for the master branch
+on:
+  push:
+    branches: [master]
+  pull_request:
+    branches: [master]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: denolib/setup-deno@v2
+        with:
+          deno-version: v1.8
+      - name: Create tests
+        run: deno test --unstable --coverage=coverage
+      - name: Create coverage report
+        run: deno --unstable coverage ./coverage --lcov > coverage.lcov
+      - name: Collect coverage
+        uses: codecov/[email protected]
+        with:
+          file: ./coverage.lcov