Remove unused -d/daemon-id and standardize peer_id/group_id in config

[mikelangmayr]

• remove -d/--daemon-id from pi-daemon, adc, piaa-gimbalmount, generic/filterwheel: confirmed no deployed config uses the daemons: subsystem style it selected between, only the never-deployed config/example/hsfei.yaml did
• remove the hardcoded group_id = "hsfei" class attribute from PiDaemon/AdcDaemon/PiaaGimbalmount; group_id now comes from config only, consistently across all daemons
• shorten peer_id in every hsfei config to just the scope (e.g. hsfei_pickoff -> pickoff) and add group_id: hsfei to the five configs that were missing it; every config now sets both explicitly, config file is the single source of truth
• delete hispec/src/hispec/config.py (ConfigError, DaemonConfigLoader, extract_daemon_config, etc.): confirmed unused dead code, left over from before HispecDaemon delegated to libby's own config loading
• depends on libby PR Add logging and tests to sunpower controller #23 (qualified_peer_id): once merged, these daemons' wire address becomes group_id.peer_id (e.g. hsfei.pickoff) instead of the old bare hsfei_pickoff - needs to deploy together with that libby change, not before it
• verified end to end: from_config_file (no daemon_id arg) loads peer_id/group_id correctly for pi-daemon, adc, and piaa-gimbalmount against their real configs, and build_libby() produces the correct qualified wire identity for each