Add advanced controls and diagnostics

[PrzemyslawKlys]

Summary

This adds a few ComfoConnect controls and diagnostics that are already available through the bridge API but were not exposed as Home Assistant entities:

• timed boost and away controls, plus buttons to cancel each mode
• sensor-based ventilation selects for passive temperature, humidity comfort, and humidity protection
• disabled-by-default number entities for airflow targets, RMOT thresholds, and temperature profile targets
• disabled-by-default diagnostic/energy sensors for device state, next-change timers, yearly totals, avoided heating/cooling, RF pairing, and filter state

The writable number entities read the min/max/step metadata from the unit before exposing values in Home Assistant.

Notes

This is intentionally separate from #151, which handles alarm surfacing. This PR only contains the advanced controls and diagnostics work.

The changes were tested on an AERISnext 450 R VV through an Evotec fork before opening this upstream PR. The live test read number values, ranges, and steps from the unit without writing settings; the user then installed and tested the merged fork build in Home Assistant.

Validation

• python -m ruff check custom_components
• python -m ruff format --check custom_components
• python -m compileall custom_components\comfoconnect
• imported the new Home Assistant platforms with Home Assistant plus aiocomfoconnect==0.1.15