String Snowflake ID in decorator args

[FayeDel]

About this pull request

This PR essentially warns the user that the command(s) that uses string snowflake IDs as a guild_ids arg does not work and therefore result in "This interaction failed".

Changes

Added a guilds_id check if all of them are ints on both the regular slash client end and on the cog_ext end, and provided an Exception upon check failure.

Checklist

• I've checked this pull request runs on Python 3.6.X.
• This fixes something in Issues.
  • Issue: slash decorators should handle users using str for snowflakes #129
• This adds something new.
• There is/are breaking change(s).
• (If required) Relevant documentation has been updated/added.
• This is not a code change. (README, docs, etc.)

[quirky-bluejay]

This should raise a custom exception, for example like the others that are in .error.
Also not too sure about this one, but shouldn't all development be targeted at the components branch?
I wouldn't count this a breaking change as it doesn't 'work' when ids are strings anyways.

[FayeDel]

To be completely honest, I wasn't too sure if it would be targeted towards component because I presumed that it was for components and its own spiel. That and, I had to second guess marking if it was a breaking change, but the tip helps in console so I marked it there.

[LordOfPolls]

I'm happy with these changes, but can you please make them for the components branch, as per what cat said

[LordOfPolls]

Is this complete?

[FayeDel]

This is switched to components with its own respective changes, yes. Should have mentioned that earlier, my bad

[LordOfPolls]

Please may you run pre_push.py, rn your pr is failing due to formatting issues

[FayeDel]

Ran the PR and formatted (double checked even without the file and it seems to be fine).

[LordOfPolls]

Merging, thanks for contributing, please dm me on discord for the role

[Toricane]

test