👷 (SETUP) Create CI to test coverage

.github/workflows/coverage.yaml

@@ -0,0 +1,36 @@
+name: Test coverage
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  build:
+    name: Build
+    runs-on: ubuntu-latest
+    steps:
+
+    - name: Set up Go 1.x
+      uses: actions/setup-go@v2
+      with:
+        go-version: ^1.16
+        cache-dependency-path: go.sum
+
+    - name: Check out code into the Go module directory
+      uses: actions/checkout@v2
+
+    - name: Get dependencies
+      run: go get -v -t -d ./...
+
+    - name: Test
+      run: go test -v ./... -coverprofile=coverage.txt -covermode=atomic
+
+    - name: Upload coverage to Codecov
+      uses: codecov/codecov-action@v1
+      with:
+        token: ${{ secrets.CODECOV_TOKEN }}
+        file: ./coverage.txt