Add A22YYUV as a variant of A02YYUV ultrasonic sensor

[PhracturedBlue]

Component name

a02yyuv

Link to component documentation on our website

https://esphome.io/components/sensor/a02yyuw/

Describe the enhancement

DYP has a few variants of waterproof sensors that speak the same UART protocol, but use 115200bps instead of 9600.
I can get these working by simply duplicating the A02YYUV component and changing the 9600 to 115200 in the sensor.py code.

I can create a pull request, but I'm not sure what the recommended configuration should be. Should I just allow overriding the baud rate? or maybe add a new variant that changes the baud rate?

Use cases

There are other DYP ultrasonic waterproof sensors that could be supported with the same code using a minor change

Anything else?

Datasheet:
https://www.dypcn.com/uploads/A22-Datasheet1.pdf