add proto

api/smm_core.proto

@@ -0,0 +1,13 @@
+syntax = "proto3";
+
+package crabs.smm_core;
+
+import "google/api/annotations.proto";
+import "google/api/httpbody.proto";
+import "protoc-gen-openapiv2/options/annotations.proto";
+
+option go_package = "pkg/proto";
+
+option (grpc.gateway.protoc_gen_openapiv2.options.openapiv2_swagger) = {};
+
+service SmmCore {}