Add F2600 support

[unex]

Add F2600 support as discussed in #34

Tested on my own F2600 to the best of my ability.

It seems that some parameters like AC charge power and display timeout seconds are only returned during a full "get_status_update" response. Currently the _process_telemetry function will overwrite _data on every call, so if there is a response from the battery that does not include everything, all other parameters will be removed. While I was doing my testing I made a change to update parameters instead of a full overwrite, if you think that is useful it can be found here: https://github.com/unex/SolixBLE/tree/update-parameters

[flip-dots]

So this is pretty good, just a few minor things.

The whole get_status_update thing is not very well thought out and that is my fault, I added it as a "this is kind of neat but I don't have a use for it" type of thing and did not look into it any further and left it kind of half arsed. It's something I will probably address eventually but these kinds of architectural changes will need to wait until I have more time when my dissertation and exams are over which will be in a couple of months.

Since this is a fairly simple PR which does not require much time on my part if you just fix the mentioned issues from the comments I am happy to merge it and deal with the bigger architectural changes later, though I might not have the time to add it to the Home Assistant integration for a while.

[unex]

I've done some more testing and found some discrepancies from the F2000 implementation:

• af will show DC input power as well, I believe this is total input power, even though from what I can tell it wont use both solar input and AC input at the same time.
• b0 is combined output, not just AC
• a5 appears to be AC input power, I cant find a key that correlates to ac_to_battery specifically, and it seems that the device only reports AC input power when the battery is charging. Once the battery is charged all AC input values go to 0 even though the device is doing passthrough.

I am not sure what the difference is between AC_POWER_OUT and AC_POWER_OUT_SOCKETS is, since these models only have AC sockets.

[flip-dots]

Hi,

This looks fine but I don't currently have the time to do a proper review and release, I still have a few weeks of exams left but I should be able to sort this out after that, sorry :(