feat: add ownerOnly plugin (#4)

TypeScript/ownerOnly.ts

@@ -0,0 +1,31 @@
+// @ts-nocheck
+/**
+ * @author: @EvolutionX-10
+ * @version: 1.0.0
+ * @description: This is OwnerOnly plugin, it allows only bot owners to run the command, like eval.
+ * @license: MIT
+ * @example:
+ * ```ts
+ * import { OwnerOnly } from "../path/to/your/plugin/folder";
+ * import { sernModule, CommandType } from "@sern/handler";
+ * export default sernModule<CommandType.Slash>([OwnerOnly()], {
+ * // your code
+ * })
+ * ```
+ */
+
+import { CommandType, EventPlugin, PluginType } from "@sern/handler";
+const ownerIDs = ["697795666373640213"]; //! Fill your ID
+export function ownerOnly(): EventPlugin<CommandType.Both> {
+	return {
+		type: PluginType.Event,
+		description: "Allows only bot owner to run command",
+		async execute(event, controller) {
+			const [ctx] = event;
+			if (ownerIDs.includes(ctx.user.id)) return controller.next();
+			//* If you want to reply when the command fails due to user not being owner, you can use following
+			// await ctx.reply("Only owner can run it!!!");
+			return controller.stop(); //! Important: It stops the execution of command!
+		},
+	};
+}