Python Protocol Gateway v1.1.9

alright, this one has been brewing for a while now. i've been completely occupied with irl.
but we have some good additions in this release.

bunch of fixes...
per register read timing ( allows extra fine tuning for performance )
improved write ( mqtt -> modbus ) functionality
added some utils to help dev / debug writing
i'm sure im missing more

fix pymodbus compatability

variable register read timing

add write unsafe option

add other data types for validation when writing to modbus

fix write unit_mod

fix sub ushort writes - bitwise

add modbus_tcp server sim script for testing

test protocol for testing / simulating

Bit of code cleaning and standardization started by
@utdrmac
added ruff
lots more todo here in the eventual future.

fix dockerfile #84
@ederjc