Hrithik Dhakrey

Python 3.12 deprecates `datetime.utcnow()` in favor of using timezone-aware objects like `datetime.now(UTC)`. This commit updates the codebase accordingly to align with the latest recommendations. https://docs.python.org/3/library/datetime.html#datetime.datetime.utcnow

Update Message.md: Clarify description for the "application" field in the message object

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In the latest discord API docs description was mistakenly identical to the "activity" field description.  https://discord.com/developers/docs/resources/message#message-object

Add Ctrl+/ comment toggle functionality

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This PR implements a comment toggle feature similar to popular IDEs like VS Code, allowing users to quickly comment/uncomment lines using Ctrl+/. Issue: #325