[boschshc] Enhance device associations in discovery (#14672) (#14752)
- fix door/window contact device model (SWD instead of WRC2)
- fix in-wall light switch device model (BSM instead of PSM)
- fix thing type of BWTH (should be a wall thermostat, not a thermostat)
- add association for PSM (smart plug)
- add association for LEDVANCE_LIGHT (smart light bulb)
- add association for TRV (thermostat)