Improved kotlin support for Commands static factory

[Daniel1464]

Added an overload of the runOnce and run factories within the Commands namespace that only accepts a lambda argument(without the requirements vararg at the end). Kotlin allows you to "move" lambdas outside of the function body if the lambda is the last argument within the function args, but since it recognizes the vararg as the last argument, you cannot do this for the runOnce and run factories(while being able to for the until() decorator, the waitUntil() factory, and other components such as Triggers).

Before:

Commands.runOnce({
     // Do something here
})

Now:

Commands.runOnce {
   // Do something here
}

[github-actions]

This PR modifies commands. Please open a corresponding PR in Python Commands and include a link to this PR.

[Daniel1464]

Not applicable to c++/python

[ThadHouse]

Does this create overload ambiguities? Since there are now 2 functions with the same name that take only 1 parameter?

[Starlight220]

I'm not a fan of this.

This feels like a way that's too easy to end up with a command without requirements.
The Subsystem.run etc factories already allow this syntax.

Perhaps if we had some Kotlin sources then I'd be all for some sugar such as this and marking it with @JvmSynthetic (=hidden from Java).

Given the ease of extensibility Kotlin has, the potential problems from having this in Java are a cost too high for sugaring Kotlin.