Add Limelight3 hardware config

[Craftzman7]

Description

Closes #2091

I know the pins and the FOV are correct, unsure about the PWM range or frequency. I haven't had a chance to test this but I was able to figure this out when attempting to turn on the LEDs on a blank install of Raspberry Pi OS back in 2023. I will have access to an LL3 tomorrow and hope to test then.

Meta

Merge checklist:

• Pull Request title is short, imperative summary of proposed changes
• The description documents the what and why
• This PR has been linted.
• 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

[thatcomputerguy0101]

PWM range and frequency can probably be left unspecified to use default values.

[Craftzman7]

The current values are just yanked from the LL2+ config.

[thatcomputerguy0101]

ledPWMFrequency is not currently parsed by PV, and ledPWMRange defaults to [0, 100]. It seems like ledPWMFrequency was forgotten in the documentation and the LL2+ config after #127 removed the option.

[Craftzman7]

Tested, working.

[Gold856]

Can you confirm that this works on the latest commit on main? #2171 changed how GPIO works.

[Craftzman7]

Yeah, give me a couple days to get access to hardware again.