[Error Handler] Rework

[Aluerie]

Current Error Handler is a chaoric order tier mess.

We need to rewrite it.

TODO

• Clr.error
  Look those up and maybe rewrite into raise Error
• Check all situations like cog_error, text/slash, etc.
• fuzzy close match for CommandNotFound
• inspect all commands.BadArgument usages
• remember that for error for views - modals and stuff might need separate on error but idk

Done

• can we automatically fetch name of a task where error happened ?
• Exception Manager
• HTTPException async context