Type of feature request

API functionality

Description of the feature you're suggesting

Currently mentioning an app command is pain with plain discord.py. You would need to fetch all commands from api and search for the right command. This can be improved by implementing a cache.

A tag from discord.py:

To have your bot mention its own commands without hardcoding them, you'll need to use either tree.sync or tree.fetch_commands to get the commands from discord then .mention the command(s) you want.
It's recommended to subclass CommandTree to override these methods and cache the results to avoid unnecessary api calls.

The best way would be adding such cache in the tree. This cache is either supplied on sync or when triggering manually an update with a method.

Furthermore a method to get a mention would be nice. E.g. Bot.get_app_command_mention(name: str, guild_id: Optional[int]) -> Optional[str]
Usage:

• bot.get_app_command_mention('ban')
• bot.get_app_command_mention('cog update')
• bot.get_app_command_mention('load', guild_id=133049272517001216)

Anything else?

No response