fix(discord-gateway): add missing dependencies (axios, ws, @types/pg, @types/ws)

After removing root package deps, discord-gateway service was missing:
- axios (used in indonesianTextNormalizer.ts)
- ws (used in broadcaster.ts)
- @types/pg (needed for TypeScript pg declarations)
- @types/ws (needed for ws types)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

services/discord-gateway/package.json

@@ -18,6 +18,7 @@
     "@discordjs/opus": "^0.10.0",
     "@discordjs/voice": "^0.19.2",
     "@snazzah/davey": "^0.1.11",
+    "axios": "^1.16.1",
     "discord.js-selfbot-v13": "workspace:*",
     "dotenv": "^17.4.2",
     "drizzle-orm": "^0.45.2",
@@ -32,11 +33,14 @@
     "prism-media": "2.0.0-alpha.0",
     "sharp": "^0.34.5",
     "winston": "^3.19.0",
+    "ws": "^8.20.1",
     "zod": "^4.4.3"
   },
   "devDependencies": {
     "@biomejs/biome": "latest",
     "@types/node": "^25.9.0",
+    "@types/pg": "^8.20.0",
+    "@types/ws": "^8.18.1",
     "drizzle-kit": "^0.31.10",
     "tsx": "^4.22.2",
     "typescript": "^5.9.3",