feat: added auth for telegram stage

Proto/user.proto

@@ -1,14 +1,16 @@
 syntax = "proto3";
 option csharp_namespace = "JOBot.Proto";
 
+import "google/protobuf/wrappers.proto";
+import "google/protobuf/empty.proto";
+
 service User {
 	rpc Register (RegisterRequest) returns (RegisterResponse);
 	rpc GetUser (GetUserRequest) returns (GetUserResponse);
 	rpc AcceptEula (AcceptEulaRequest) returns (AcceptEulaResponse);
+	rpc GetHeadHunterAuthHook(GetHeadHunterAuthHookRequest) returns (GetHeadHunterAuthHookResponse);
 }
 
-import "google/protobuf/wrappers.proto";
-
 message RegisterRequest{
 	int64 user_id = 1;
 	google.protobuf.StringValue username = 2;
@@ -37,4 +39,12 @@ message AcceptEulaRequest {
 
 message AcceptEulaResponse{
 	bool success = 1;
+}
+
+message GetHeadHunterAuthHookRequest{
+	int64 user_id = 1;
+}
+
+message GetHeadHunterAuthHookResponse{
+	string registration_url = 1;
 }