add mutation resolvers to merged resolvers

src/MergedResolvers.ts

@@ -7,6 +7,7 @@ import { OrderedStopResolvers } from "./resolvers/OrderedStopResolvers";
 import { StopResolvers } from "./resolvers/StopResolvers";
 import { ShuttleResolvers } from "./resolvers/ShuttleResolvers";
 import { RouteResolvers } from "./resolvers/RouteResolvers";
+import { MutationResolvers } from "./resolvers/MutationResolvers";
 
 export const MergedResolvers: Resolvers<ServerContext> = {
   ...QueryResolvers,
@@ -16,4 +17,5 @@ export const MergedResolvers: Resolvers<ServerContext> = {
   ...StopResolvers,
   ...OrderedStopResolvers,
   ...EtaResolvers,
-};
+  ...MutationResolvers,
+};