Refactor database management and schema initialization

- Removed the old npc_memory.db file.
- Updated time.txt with a new timestamp.
- Refactored transaction recording in bank_functions.py to use parameterized queries.
- Enhanced DatabaseManager in sql_commands.py to support singleton pattern and improved table creation logic.
- Added methods for sanitizing SQL identifiers and parsing insert columns for upsert operations.
- Improved error handling and connection management in execute_query, fetch_one, fetch_all, and fetch_as_dataframe methods.
- Introduced a new bootstrap_database.py script for initializing the database schema.
- Updated app.py to use the new initialize_database function for database management.

bot.py

@@ -4,6 +4,7 @@ from discord.ext import commands
 import os
 from dotenv import load_dotenv
 from web.app import app
+from utils.sql_commands import initialize_database
 import threading
 import itertools
 
@@ -50,9 +51,9 @@ class Client(commands.Bot):
 
 def main():
     load_dotenv()
+    initialize_database()
     client = Client()
     token = os.getenv("TOKEN")
-    print(token)
     if token is not None:
         threading.Thread(target=run_web, daemon=True).start()
         client.run(token)