[BUG] : `psycopg2` is not async

[code-chaser]

PROBLEM :

• discord.py is an asynchronous library whereas psycopg2 (used here for SQL database integration) is synchronous.
• A synchronous library should never be used with an async library for obvious reasons.

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POSSIBLE WORKAROUND :

• Use ayncpg :- async library for interacting with postgreSQL databases.

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[code-chaser]

• Fixed in [PR] : psycopg2 to asyncpg #24