Add force charge/discharge to H3

[Vato9394]

I have an Foxess H3 and the ability to force charge/discharge was removed in a recent update see:
#569 (comment)

I want to troubleshoot together with you @canton7 if you have time for this to possibly enable this feature for the H3.

[canton7]

Do you have an H3 or an AIO-H3?

[Vato9394]

But how are we sure that we cannot do it?

[canton7]

Because when I try, your inverter returns an error?

[Vato9394]

But maybe it is just a different modbus register?
How Can I find this? or is it just not possible?
I find it hard to understand that foxess is allowing it on H1 but not on H3

[canton7]

Well, they do support it on the H3. Just not the AIO-H3.

The remote control registers are normally exposed in the same block as things like Work Mode, which the AIO-H3 exposes in the normal place. It just doesn't seem to support specifically the remote control registers in that region.

You're welcome to try and find them elsewhere, but I'm not sure how you'd know you'd found them, in all honesty.

[PaRez280]

For me, version v1.10.2b3 did not display correctly only the entities battery Charge and battery discharge. In version 1.11.1, everything is already OK.