Migrated general commands (ping, uptime, botinfo, serverinfo, feedback) into a single GroupCog in cogs/general/__init__.py for better organization and maintainability. Converted individual command files to export command functions instead of Cogs. Updated bot.py to load the new general extension. Renamed help.py for consistency.
Introduces an uptime command and view to show how long the bot has been running. Adds a method to calculate uptime in bot.py, registers the command in help.py, and implements the command logic in a new uptime.py cog with a refresh button.
