add refresh-password route

api/main.proto

@@ -24,6 +24,13 @@ service EveningDetectiveServer {
       body: "*"
     };
   }
+
+  rpc RefreshPassword(RefreshPasswordReq) returns (RefreshPasswordRsp) {
+    option (google.api.http) = {
+      post: "/api/refresh-password"
+      body: "*"
+    };
+  }
 }
 
 message PingReq {}
@@ -46,3 +53,11 @@ message SignupReq {
 message SignupRsp {
   string error = 1;
 }
+
+message RefreshPasswordReq {
+  string email = 1;
+}
+
+message RefreshPasswordRsp {
+  string error = 1;
+}