feat(split): Add HID indicators and physical layout set to Wired split

[ReFil]

This adds support for the set hid indicators and set physical layout commands to the split transport handler, I've tested the hid indicators and all seems to work as expected

• Branch has a clean commit history
• Additional tests are included, if changing behaviors/core code that is testable.
• Proper Copyright + License headers added to applicable files (Generally, we stick to "The ZMK Contributors" for copyrights to help avoid churn when files get edited)
• Pre-commit used to check formatting of files, commit messages, etc.
• Includes any necessary documentation changes.

[petejohanson]

Seems very reasonable. Tested on wireless and wired splits after the change?

[ReFil]

I've been testing it on a dual mode wireless and wired split the past few days with no issues, pre the change when the halves were connected using the wired connector it wouldn't pass hid events to the peripheral and now it does. I haven't tested it on a wireless only split but I can disable wired split on this board and confirm that?