Change network interface for PlotJugglerSink

[annieisawesome2]

Description

Adds a new plot_juggler_interface field to the robot toml configuration, allowing the network interface used by PlotJugglerSink to be set at runtime during Thunderloop initialization. Defaults to tbotswifi5.

ThreadedUdpSender binds traffic to a specific network interface. Previously, the interface used for the PlotJuggler log sink was hardcoded, meaning packets could silently route through lo (loopback) and never reach a laptop running PlotJuggler. Making this configurable ensures debug telemetry reliably reaches the correct network (e.g. robot WiFi) without requiring a code change.

Changes made in this PR:

• Added plot_juggler_interface field to robot_config.toml with default value tbotswifi5
• Wired the configured interface into PlotJugglerSink initialization in Thunderloop
• PlotJugglerSink follows the same custom log sink pattern as VISUALIZE (Thunderscope) and CSV
• Custom log level PLOTJUGGLER is defined in custom_logging_levels.h and enabled at init in logger.h, above normal INFO noise

Testing Done

bazel test //software/embedded/toml_config:toml_config_client_test

Todo test:
probably set interface to tbotswifi5 and ensure PlotJuggler is listening on the robot WiFi network/multicast. Make sure the data is received. Check with william - thanks!

Resolved Issues

implements #3718

Length Justification and Key Files to Review

Review Checklist

It is the reviewers responsibility to also make sure every item here has been covered

• Function & Class comments: All function definitions (usually in the .h file) should have a javadoc style comment at the start of them. For examples, see the functions defined in thunderbots/software/geom. Similarly, all classes should have an associated Javadoc comment explaining the purpose of the class.
• Remove all commented out code
• Remove extra print statements: for example, those just used for testing
• Resolve all TODO's: All TODO (or similar) statements should either be completed or associated with a github issue

[williamckha]

Looks good, thanks Annie!

I know that the issue says to add a new plot_juggler_interface field to the TOML file, but could you please change it to just use the network_interface? I don't see when we would ever need to use a separate interface for sending PlotJuggler data

[nycrat]

LGTM !