🧑‍💻 Add more user related query rpc call

pkg/proto/user.proto

@@ -0,0 +1,40 @@
+syntax = "proto3";
+
+option go_package = ".;proto";
+
+package proto;
+
+service UserService {
+  rpc GetUser(GetUserRequest) returns (UserInfo) {}
+  rpc ListUser(ListUserRequest) returns (MultipleUserInfo) {}
+  rpc ListUserRelative(ListUserRelativeRequest) returns (ListUserRelativeResponse) {}
+}
+
+message UserInfo {
+  uint64 id = 1;
+  string name = 2;
+  optional bytes perm_nodes = 3;
+  optional bytes metadata = 4;
+}
+
+message MultipleUserInfo {
+  repeated UserInfo data = 1;
+}
+
+message GetUserRequest {
+  uint64 user_id = 1;
+}
+
+message ListUserRequest {
+  repeated uint64 user_id = 1;
+}
+
+message ListUserRelativeRequest {
+  uint64 user_id = 1;
+  int32 status = 2;
+  bool is_related = 3;
+}
+
+message ListUserRelativeResponse {
+  repeated UserInfo data = 1;
+}