refactor(handlers): resolve RequestManager.<method> using await before returning the value (#468)

* Update channel.ts

* Update gateway.ts

* Update guild.ts

* Update member.ts

* Update message.ts

* Update oauth.ts

* Update webhook.ts

* move things arrouond

* Update guild.ts

* Update src/api/handlers/webhook.ts

* stop linter complains

* add this back

Co-authored-by: Ayyan <ayyantee@gmail.com>

src/api/handlers/oauth.ts

@@ -3,8 +3,10 @@ import { OAuthApplication } from "../../types/oauth.ts";
 import { endpoints } from "../../util/constants.ts";
 
 /** Returns the bot's OAuth2 application object without `flags`. */
-export function getApplicationInformation() {
-  return RequestManager.get(endpoints.OAUTH2_APPLICATION) as Promise<
-    OAuthApplication
-  >;
+export async function getApplicationInformation() {
+  const result = await RequestManager.get(
+    endpoints.OAUTH2_APPLICATION,
+  );
+
+  return result as OAuthApplication;
 }