[usage] Switch codegen of Go proto/grpc to buf

components/usage-api/buf.gen.yaml

@@ -0,0 +1,10 @@
+version: v1
+plugins:
+  - name: go
+    out: go
+    opt:
+     - module=github.com/gitpod-io/gitpod/usage-api
+  - name: go-grpc
+    out: go
+    opt:
+      - module=github.com/gitpod-io/gitpod/usage-api

components/usage-api/generate.sh

@@ -15,13 +15,12 @@ COMPONENTS_DIR="$ROOT_DIR"/components
 # shellcheck disable=SC1090,SC1091
 source "$ROOT_DIR"/scripts/protoc-generator.sh
 
-lint
+
 
 install_dependencies
-go_protoc "$COMPONENTS_DIR" "usage/v1"
-mkdir -p go/v1
-mv go/usage/v1/*.pb.go go/v1
-rm -rf go/usage
+lint
+protoc_buf_generate
+
 typescript_ts_protoc "$COMPONENTS_DIR" "usage/v1"
 
 update_license