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

* refactor(helpers): separate functions into files

* idk

* idk

src/helpers/commands/get_slash_commands.ts

@@ -0,0 +1,16 @@
+import { applicationID } from "../../bot.ts";
+import { RequestManager } from "../../rest/request_manager.ts";
+import { SlashCommand } from "../../types/mod.ts";
+import { Collection } from "../../util/collection.ts";
+import { endpoints } from "../../util/constants.ts";
+
+/** Fetch all of the global commands for your application. */
+export async function getSlashCommands(guildID?: string) {
+  const result = (await RequestManager.get(
+    guildID
+      ? endpoints.COMMANDS_GUILD(applicationID, guildID)
+      : endpoints.COMMANDS(applicationID),
+  )) as SlashCommand[];
+
+  return new Collection(result.map((command) => [command.name, command]));
+}