Remove command_buffer::submit module, make new Queue methods public

[Rua]

Changelog:
Remove this line:

- `SubmitAnyBuilder` and its wrapped types no longer have a lifetime parameter, as they own their data instead. Various methods of these types now take their arguments by value.

And add:

### Breaking changes
Changes to queue operations:
- The `command_buffer::submit` module has been removed. The `SubmitAnyBuilder` enum is moved to the `sync` module, and no longer has a lifetime parameter.

### Additions
- Added `bind_sparse_unchecked`, `present_unchecked` and `submit_unchecked` methods to `QueueGuard`.

The new queue operation methods are now exposed. There may be some things that still need adjusting, and of course there need to be safe validated versions of them too.

[AustinJ235]

Looks good!