Add NPC interaction system with memory and quest generation

- Introduced a new NPC system with dynamic NPCs and conversation handling.
- Implemented NPC memory using SQLite to log conversations and manage relationships.
- Added commands for talking to NPCs, listing available NPCs, and generating quests.
- Updated database schema to support NPC conversations and relationships.
- Refactored code structure to separate concerns into cogs and handlers.

cogs/gamble.py

@@ -3,7 +3,7 @@ from random import shuffle, choices, choice
 from discord.ext import commands
 from utils.sql_commands import DatabaseManager
 from utils.bank_functions import bank_data, update_money
-from datetime import datetime, timedelta
+from datetime import datetime
 import asyncio
 import random
 
@@ -94,7 +94,7 @@ class Deck:
 
 
 class Hand:
-    def __init__(self, name, bet):
+    def __init__(self, name:str, bet:int):
         self.cards = []
         self.value = 0
         self.aces = 0