refactor: add discord-api-types as a dependency (#5539)

package.json

@@ -59,6 +59,7 @@
     "@types/node": "^12.12.6",
     "@types/ws": "^7.2.7",
     "cross-env": "^7.0.2",
+    "discord-api-types": "^0.18.0",
     "discord.js-docgen": "git+https://github.com/discordjs/docgen.git",
     "dtslint": "^4.0.4",
     "eslint": "^7.11.0",
@@ -71,7 +72,7 @@
     "lint-staged": "^10.4.2",
     "prettier": "^2.1.2",
     "tslint": "^6.1.3",
-    "typescript": "^4.0.3"
+    "typescript": "^4.2.4"
   },
   "engines": {
     "node": ">=14.0.0"