feat: added shutdown method

Author: joeynenni

templates/base/server/.hathora/store.ts.hbs

@@ -65,8 +65,9 @@ setInterval(() => {
   pendingMessages.clear();
 }, {{#if tick}}{{tick}}{{else}}50{{/if}});
 setInterval(() => {
-  rooms.forEach(({ subscriptions }, stateId) => {
+  rooms.forEach(async ({ impl, subscriptions }, stateId) => {
     if (subscriptions.size === 0) {
+      await impl.onShutdown(ctxNoEvents(chance, time, stateId));
       rooms.delete(stateId);
       log.unload(stateId);
     }

templates/bootstrap/server/impl.ts.hbs

@@ -37,6 +37,7 @@ export class Impl implements Methods<InternalState> {
   {{#if tick}}
   onTick(state: InternalState, ctx: Context, timeDelta: number): void {}
   {{/if}}
+  onShutdown(state: InternalState, ctx: Context): void {}
 }
 {{#*inline "renderDefault"}}
 {{#if (eq type "array")}}