chore: add google/shopping/type/types.proto when generating shopping APIs (#2414)

* chore: add `google/shopping/type/types.proto` when generating shopping APIs.

* do not copy types.proto

Author: JoeWang1127

library_generation/generate_library.sh

@@ -182,6 +182,12 @@ case "${proto_path}" in
     removed_proto="google/rpc/http.proto"
     proto_files="${proto_files//${removed_proto}/}"
     ;;
+  "google/shopping"*)
+    # this proto is included in //google/shopping/css/v1:google-cloud-shopping-css-v1-java
+    # and //google/shopping/merchant/inventories/v1beta:google-cloud-merchant-inventories-v1beta-java
+    # and //google/shopping/merchant/reports/v1beta:google-cloud-merchant-reports-v1beta-java
+    proto_files="${proto_files} google/shopping/type/types.proto"
+    ;;
 esac
 # download gapic-generator-java, protobuf and grpc plugin.
 download_tools "${gapic_generator_version}" "${protobuf_version}" "${grpc_version}" "${os_architecture}"
@@ -285,7 +291,8 @@ case "${proto_path}" in
 esac
 # copy proto files to proto-*/src/main/proto
 for proto_src in ${proto_files}; do
-  if [[ "${proto_src}" == "google/cloud/common/operation_metadata.proto" ]]; then
+  if [[ "${proto_src}" == "google/cloud/common/operation_metadata.proto" ]] ||
+     [[ "${proto_src}" == "google/shopping/type/types.proto" ]]; then
     continue
   fi
   mkdir -p "${temp_destination_path}/proto-${folder_name}/src/main/proto"