feat: add support for chat input command arguments

[Arcadia148]

This PR is my attempt at adding support for chat input arguments

The basic way this will work is;

You can register the command option type to match the argument. e.g. Channel for channel related arguments.

// 'channel' being the name of the option so we can use getChannel.
const channel = await args.pick('guildTextChannel', 'channel');

Or you can register the command option type as string and use:

// once again 'channel' being the name of the option so we can use getString.
const channel = await args.pick('guildTextChannel', 'channel', { useStringResolver: true });

Remarks

I only really thought it made sense to include the "pick" and "repeat" functions on ChatInputArgs, So i did not include others.

There most likely is a better way to implement this, but idk.

also a few simple changes will have to be made to packages like subcommands to support this ;)

PR closes #494

[favna]

In lieue of a response from @vladfrangu who has told me in DM (and I quote):

I'm not a fan of it at all
but
I also dont wanna be like "no thanks close"

(Likewise, I'm not a fan that he doesn't just tell you and leaves the PR unanswered, there is avoiding confrontation and there is extremes haha)

I'm just updating you that we'll keep this PR open, but not much done with it right now.
Furthermore, @vladfrangu has also said:

bc I want to make args have a consistent interface between types
Basically make Args an interface now
and then MessageArgs/ChatInputCommandArgs implement it
and then people can just
use it
without thinking of what they are using it in
also it's hella breaking LOL sapphire v5 lets GOO

If you can instead provide an implementation that matches those wishes from Vladdy then we can further review this PR. Most importantly to keep in mind that you're free to introduce breaking changes.

[Arcadia148]

Apologies for the late response haha. I personally also thought this was not really a good implementation, although more so after a week or so when i looked back over it.

Unfortunately, i doubt i will provide an implementation fulfilling the requirements. So i will close this PR.

Good luck and thanks for the awesome framework!