ci: use Github Actions

Author: nanmu42

.github/workflows/ci.yaml

@@ -0,0 +1,27 @@
+name: CI
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Set up Go
+        uses: actions/setup-go@v2
+        with:
+          go-version: "1.x"
+
+      - name: Test
+        run: go test -v -coverprofile=coverage.txt -covermode=count ./...
+
+      - name: Codecov
+        uses: codecov/[email protected]
+
+      - name: golangci-lint
+        uses: golangci/golangci-lint-action@v2