CI. Upload results to codecov

Author: sandraromanchenko

.github/workflows/reviewdog.yml

@@ -10,7 +10,14 @@ jobs:
         with:
           go-version: "1.22"
       - name: test
-        run: go test -v ./...
+        run: go test -v ./... -covermode=atomic -coverprofile=cover.out
+
+      - name: upload coverage report
+        uses: codecov/codecov-action@v4
+        with:
+          file: cover.out
+          fail_ci_if_error: false
+          token: ${{ secrets.CODECOV_TOKEN }}
 
   shellcheck:
     name: runner / shellcheck