Berry 'webserver.remove_route' to revert 'webserver.on'

[s-hadinger]

Description:

Berry add ability to revert webserver.on and make all objects removable by GC:

• webserver.remove_route(prefix:string, [, method:int]) -> bool to remove a previously defined route with webserver.on()
• internal function WebServer_removeRoute added (for ESP32 only)

Checklist:

• The pull request is done against the latest development branch
• Only relevant files were touched
• Only one feature/fix was added per PR and the code change compiles without warnings
• The code change is tested and works with Tasmota core ESP8266 V.2.7.8
• The code change is tested and works with Tasmota core ESP32 V.3.1.3.250504
• I accept the CLA.

NOTE: The code change must pass CI tests. Your PR cannot be merged unless tests pass