Integrate basic chatbot to assist with queries

.env.example

@@ -4,3 +4,4 @@ DATABASE_PORT=5432
 DATABASE_NAME=your_database_name
 DATABASE_USER=your_database_user
 DATABASE_PASSWORD=your_database_password
+LLM_API_KEY=your_llm_api_key

database/schema.sql

@@ -332,6 +332,16 @@ CREATE TABLE activity_logs (
   display_metadata JSONB NOT NULL DEFAULT '{}'
 );
 
+CREATE TABLE chat_logs (
+  id            SERIAL PRIMARY KEY,
+  user_id       INTEGER NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+  organisation_id INTEGER REFERENCES organisations(id) ON DELETE SET NULL,
+  course_id    INTEGER REFERENCES courses(id) ON DELETE SET NULL,
+  module_id    INTEGER REFERENCES modules(id) ON DELETE SET NULL,
+  question      TEXT NOT NULL,
+  answer        TEXT NOT NULL,
+  created_at    TIMESTAMPTZ NOT NULL DEFAULT now()
+);
 
 
 COMMIT;

package.json

@@ -24,6 +24,7 @@
     "jest": "^29.7.0"
   },
   "dependencies": {
+    "axios": "^1.10.0",
     "bcrypt": "^6.0.0",
     "cookie-parser": "^1.4.7",
     "dotenv": "^16.5.0",