Enhancefeat: add rate limits to absolute and fridge commands

[Saksham-official]

Description

This PR introduces rate limits to the ?absolute and ?fridge commands to prevent them from being spammed and causing potential raids, as mentioned in the issue.

A cooldown of 1 usage per 15 seconds per user (@commands.cooldown(1, 15, commands.BucketType.user)) has been applied to both commands in cogs/fun.py.

Closes #25

Changes Made

• Added @commands.cooldown(1, 15, commands.BucketType.user) to the fridge hybrid command.
• Added @commands.cooldown(1, 15, commands.BucketType.user) to the absolute hybrid command.

Impact

• Protects the server and bot by stopping possible raids through spamming these commands.
• Improves moderation functionality without disrupting the user experience.

Checklist

• I have tested these changes.
• My code follows the style guidelines of this project.

[Saksham-official]

by mistake reverted @youngcoder45 now its ready to review

[Copilot]

Pull request overview

Adds per-user cooldowns to two high-traffic “fun” hybrid commands to reduce spam/raid potential, addressing issue #25.

Changes:

• Added a 1-use-per-15-seconds per-user cooldown to the fridge hybrid command.
• Added a 1-use-per-15-seconds per-user cooldown to the absolute hybrid command.

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[youngcoder45]

Looks good to me @Saksham-official let's see what @HyScript7 says. Thanks!

[HyScript7]

Apologies for the late review. All looks good to me.
I'll be merging this now. Thank you for your contribution.