Request for LSE-3 support as suggested in #247

[adnovea]

Dear Stephane,

In #247 I provide some guidelines for modifying the code to support LSE-3 Stick Loggers that use a RAW ModBus protocol. Unfortunately, my limited Python and software management skills cannot lead me to offer complete work as a pull request.
Starting today, to run your add-on with the LSE module, you need to modify the code files yourself (parser.py and solarman.py).
I will be happy to help you with my limited skills to make LSE-3 supported.

For several months already, I ran your add-on v1.0.0 with a Deye 5K inverter and a LSE-3 module using my tweak.

Thank you for considering my humble request.

Interface could look like :