refactor(helpers): separate functions into files (#667)

* refactor(helpers): separate functions into files

* idk

* idk

src/helpers/integrations/get_integrations.ts

@@ -0,0 +1,14 @@
+import { RequestManager } from "../../rest/request_manager.ts";
+import { endpoints } from "../../util/constants.ts";
+import { requireBotGuildPermissions } from "../../util/permissions.ts";
+
+/** Returns a list of integrations for the guild. Requires the MANAGE_GUILD permission. */
+export async function getIntegrations(guildID: string) {
+  await requireBotGuildPermissions(guildID, ["MANAGE_GUILD"]);
+
+  const result = await RequestManager.get(
+    endpoints.GUILD_INTEGRATIONS(guildID),
+  );
+
+  return result;
+}