Add switch platform to bosch_shc integration (#62315)

* Add support for switch platform.

* Add untested files to .coveragerc.

* Differ between Light Switch and Smart Plug.
Bumped to boschshcpy==0.2.27

* Removed duplicated code.
Fixed suggestions from code review.

* Fixed pylint errors

* Fix pylint issue.

* Add property statement

* Fixed wrong attribute access

* Apply suggestions from code review

Co-authored-by: epenet <6771947+epenet@users.noreply.github.com>

* Move switch function to base class.
Changes from code review.

* Apply suggestions from code review

Co-authored-by: epenet <6771947+epenet@users.noreply.github.com>

* Merged camera switch into SHCSwitch class

* Type hint

* Removed deprecated sensor entities in switch device.
Added routing switch entity.

* Apply suggestions from code review

Co-authored-by: epenet <6771947+epenet@users.noreply.github.com>

* Icon and EntityCategory as class attributes

Co-authored-by: epenet <6771947+epenet@users.noreply.github.com>