added welcome msg

src/actions/activity/activity.service.ts

@@ -0,0 +1,13 @@
+import type { CacheType, Client, Interaction } from "discord.js";
+import client from "lib/client";
+
+export class ActivityService {
+
+    async setActivity(client: Client<boolean>, description: string, activity: string) {
+        client.user?.setActivity(":3", { type: 4 });
+        console.log("set activity");
+        client.user?.setPresence({
+            status: "online",
+        });
+    }
+}