v0.8.2 — Auto-Items & full BACnet tagging

Experimental BACnet/IP binding for openHAB 4.3.x.

Highlights of the 0.7–0.8 series:

• Automatic discovery (Who-Is + passive + unicast subnet sweep) — finds devices that ignore Who-Is.
• Auto-creates and links an Item for every object, removed again when the Thing is deleted.
• Comprehensive, sortable tags per item: object type, Writable/ReadOnly, openHAB semantic class
  (Measurement/Setpoint/Switch/Status), physical quantity, unit (°C, Pa, kWh, …), device name
  (e.g. Altbau), device instance (Instance_) and a generic "BACnet" marker.
• Supports all value-bearing object types (Analog/Binary/Multi-State, Schedule, Calendar, Loop,
  Accumulator, Pulse-Converter, *-Value types, Lighting). Infrastructure objects are skipped.
• Alarm-state item + KBOB Notification_Class category for alarm-capable objects.
• COV (push) first, with a 5-min fallback poll and a 60-min metadata refresh (both configurable).
• Channels/items labelled with the device's real object names and units.

⚠️ Experimental. Technical details: ARCHITECTURE.md.