Named GPIO pins + Orange Pi 5 GPIO support

[thatcomputerguy0101]

Description

This adds support for named GPIO pins. These are almost essential for Orange Pi 5 support, which only have the pin names on the documentation and no numbers. It will also be useful for Rubik Pi 3 support, which has an oddball GPIO pin on a different chip for its singular PWM output.

Currently untested, also missing Rubik Pi 3 documentation.

Blocked on photon-image-modifier#119. Also will need an image update for Rubik Pi named pins to work.

Meta

Merge checklist:

• Pull Request title is short, imperative summary of proposed changes
• The description documents the what and why
• If this PR changes behavior or adds a feature, user documentation is updated
• If this PR touches photon-serde, all messages have been regenerated and hashes have not changed unexpectedly
• If this PR touches configuration, this is backwards compatible with settings back to v2025.3.2
• If this PR touches pipeline settings or anything related to data exchange, the frontend typing is updated
• If this PR addresses a bug, a regression test for it is added