Added token limits to OpenAI chat.

package.json

@@ -18,6 +18,7 @@
   "author": "Niels Simenon",
   "license": "ISC",
   "dependencies": {
+    "better-sqlite3": "^8.3.0",
     "bhttp": "^1.2.8",
     "bottleneck": "^2.19.5",
     "config": "^3.3.6",
@@ -28,6 +29,7 @@
     "irc-colors": "^1.5.0",
     "irc-upd": "^0.11.0",
     "jsdom": "^18.1.0",
+    "knex": "^2.4.2",
     "linkify-it": "^3.0.3",
     "markov-strings": "^3.0.1",
     "simple-node-logger": "^21.8.12",