Refactor bot structure to use Discord.py cogs

Description

Currently, our bot's commands and functionality are centralized in a single commands.py file. To improve modularity, maintainability, and scalability, we should refactor our bot structure to use Discord.py cogs.

Objectives

Reorganize existing commands into logical cog modules
Improve code organization and readability
Facilitate easier addition of new features in the future
Enable hot-reloading of individual cogs for easier development and maintenance

Tasks

[x] Create a new cogs directory in the project root
[x] Refactor existing commands into appropriate cog files:
- [ ] Create general.py for general-purpose commands (e.g., reintroduce)
- [x] Move streak-related functionality to streaks.py
- [x] Move LeetCode-related functionality to leetcode.py
[x] Update the main bot file to load cogs instead of importing from commands.py
[ ] #17
[x] Update documentation to reflect the new structure
[x] Test all functionality to ensure it works as expected after refactoring

Implementation Details

Each cog should be a subclass of commands.Cog
Include a setup function in each cog file for easy loading
Use the bot.load_extension() method in the main file to load cogs

Example Cog Structure

from discord.ext import commands

class ExampleCog(commands.Cog):
    def __init__(self, bot):
        self.bot = bot

    @commands.command()
    async def example_command(self, ctx):
        await ctx.send("This is an example command in a cog!")

def setup(bot):
    bot.add_cog(ExampleCog(bot))

branhoff / hooter-the-tutor