Update bot configuration and activity type in schema

- Modified package.json to add a new script for setting the bot banner.
- Changed the default activity type in schema.prisma from 'Playing' to 'Watching' for improved bot presence management.

apps/bot/package.json

@@ -10,7 +10,7 @@
     "test": "vitest run",
     "typecheck": "tsc --noEmit -p tsconfig.json",
     "prisma:generate": "prisma generate",
-    "prisma:migrate": "prisma migrate deploy"
+    "profile:banner": "tsx scripts/set-bot-banner.ts"
   },
   "dependencies": {
     "@nexumi/shared": "workspace:*",