ci: re-enacted linting

* re-enacted golangci-lint run in github action
* re-enacted codecov uploads in github action

Signed-off-by: Frederic BIDON <fredbi@yahoo.com>

.github/workflows/go-test.yml

@@ -1,23 +1,50 @@
-name: Go Test
+name: go test
 
 on: [push, pull_request]
 
 jobs:
+  lint:
+    name: Lint
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-go@v4
+        with:
+          go-version: stable
+          check-latest: true
+          cache: true
+      - name: golangci-lint
+        uses: golangci/golangci-lint-action@v3
+        with:
+          version: latest
+          only-new-issues: true
 
   test:
-
-    name: Test
+    name: Unit tests
     runs-on: ${{ matrix.os }}
 
     strategy:
       matrix:
         os: [ ubuntu-latest, macos-latest, windows-latest ]
-    steps:
+        go_version: ['oldstable', 'stable' ]
 
-    - uses: actions/setup-go@v2
+    steps:
+    - name: Run unit tests
+      uses: actions/setup-go@v4
       with:
-        go-version: 1.x
+        go-version: '${{ matrix.go_version }}'
+        check-latest: true
+        cache: true
+
+    - uses: actions/checkout@v3
 
-    - uses: actions/checkout@v2
+    - run: go test -v -race -coverprofile="coverage-${{ matrix.os }}.${{ matrix.go_version }}.out" -covermode=atomic ./...
 
-    - run: go test
+    - name: Upload coverage to codecov
+      uses: codecov/codecov-action@v3
+      with:
+        files: './coverage-${{ matrix.os }}.${{ matrix.go_version }}.out'
+        flags: '${{ matrix.go_version }}'
+        os: '${{ matrix.os }}'
+        fail_ci_if_error: false
+        verbose: true