Add support for Q.Volt HYB-G3-1P

[TheRealZago]

See #94 for some more details.

What happened here?

• Added Q.Volt HYB-G3-1P data structure parser (almost copy-pasted from HYB-G3-3P)
• Added a couple new units and modifiers (eg, to_signed32) to read certain registers
• Added test fixtures with reference responses

[squishykid]

Thanks for raising this PR! Once the checks are green I'll swing back and have a look

[TheRealZago]

@squishykid Well, it's been a while. I'm a bit of a noob when it comes to automated checks, not sure if I need to do anything else to trigger a new round...

[TheRealZago]

Anything else to do here? I still haven't figured out if I need to do something in particular to trigger a new round of checks 😅

I'd like to see it bundled in one of the next releases bundled with Home Assistant, because after the latest update I'm somehow unable to override the official library version with my own...

[Darsstar]

If resolving the conflicts doesn't cause the checks to run then it is fine to create a new (duplicate) PR.

[TheRealZago]

Uh, almost there...
Checks are failing on pylint because of duplicate-code / R0801.

I'm not brave enough to find a compliant solution for this, considering the inverter I'm adding is very close to its 3-phase G3-3P sibling and it makes sense it looks almost identical outside of the crude parameter map.

I guess R0801 could be ignored as well, but I don't know if it could have undesired side-effects on the long run.

[Darsstar]

I guess R0801 could be ignored as well, but I don't know if it could have undesired side-effects on the long run.

# pylint: disable=duplicate-code occurs 10 times already. So go ahead.

Interestingly enough the line # pylint: enable=duplicate-code only occurs 6 times.