add codecov (#1195)

.github/workflows/go.yml

@@ -23,7 +23,9 @@ jobs:
       run: go build ./...
 
     - name: Test
-      run: go test -race ./...
+      run: go test -race -coverprofile=coverage.out -covermode=atomic ./...
+    - name: Upload coverage to Codecov
+      run: bash <(curl -s https://codecov.io/bash)
 
     - name: Kratos
       run: |

codecov.yml

@@ -0,0 +1,3 @@
+ignore:
+  - "examples"
+  - "**/*.pb.go"