DAQ Server Support for the Stacklight Board

[R-Leano]

Stacklight Board intro project - adds server-side support for the stacklight board.

Wrote a new service (stacklight_service) that watches the current state from the sequencer and sends the board a command telling it what color/buzzer to show. also added a card to the frontend status page so you can see it live on the dashboard too.

What I did:

• New file: services/stacklight/stacklight_service_main.cpp - based this off heartbeat_service since it does something similar (reads state from elodin, sends udp). used the real create_stacklight_command_packet() helper instead of hand-packing bytes like heartbeat does
• Added it to cmake so it builds with everything else
• Added config.toml sections for the board + the service
• Added a stacklight card to the status page frontend, same state -> light mapping just in typescript

Testing:

• Compiles fine, binary runs and responds to --help
• Frontend builds fine
• Tested it live in sim mode - triggered a few real state changes (idle -> vent -> abort) and watched the card update colors correctly each time, buzzer pulses on abort/fire
• Have NOT tested against the real board yet since it doesn't have an ip assigned

Questions for whoever reviews this:

1. The color mapping (red/yellow/green/buzzer per state) is just my best guess based on standard industrial convention. would like someone to check it before this is actually used
2. Board ip/id in config is a placeholder (192.168.2.70) until the real one gets assigned
3. Not sure if abort/fire should blink instead of just staying solid red - open to feedback

Feel free to point out anything I did wrong