Sol3 USB Split features & additional LEDs

[Legonut]

Description

Fixes USB reconnect issues on power cycle for certain use cases and adds an additional 62 LEDs present in the fullhand case upgrade.

Types of Changes

• [ ] Core
• [X] Bugfix
• [ ] New feature
• [X] Enhancement/optimization
• [ ] Keyboard (addition or update)
• [ ] Keymap/layout/userspace (addition or update)
• [ ] Documentation

Issues Fixed or Closed by This PR

• Should fix USB reconnect issues on power cycle for some users.

Checklist

• [X] My code follows the code style of this project: C, Python
• [X] I have read the PR Checklist document and have made the appropriate changes.
• [ ] My change requires a change to the documentation.
• [ ] I have updated the documentation accordingly.
• [X] I have read the CONTRIBUTING document.
• [ ] I have added tests to cover my changes.
• [X] I have tested the changes and verified that they work and don't break anything (as well as I can manage).

[Legonut]

@drashna I tried adding the split watchdog & USB timeout, but it appears to be having build issues