Kostal Plenticore: correct and simplify smartmode

[iseeberg79]

• Correction for the smart-mode skip logic: Modbus writes are skipped if the power change is within the tolerance or unchanged, unless the watchdog interval is exceeded.
• Implemented an idle zone: any power within tolerance (i.e. ±50 W per default) is set to 0 to reduce unnecessary battery cycling and inverter wear.

[iseeberg79]

@deadrabbit87 please double check and review
We should convert it from draft PR to PR after it has run for a while

[codecov]

Codecov Report

❌ Patch coverage is 0% with 23 lines in your changes missing coverage. Please review.

❌ Your patch check has failed because the patch coverage (0.00%) is below the target coverage (75.00%). You can increase the patch coverage or adjust the target coverage.

Additional details and impacted files

@@              Coverage Diff              @@
##             develop    #3417      +/-   ##
=============================================
+ Coverage      59.74%   59.75%   +0.01%     
  Complexity       112      112              
=============================================
  Files           2870     2870              
  Lines         124042   124043       +1     
  Branches        9298     9294       -4     
=============================================
+ Hits           74101    74113      +12     
+ Misses         47159    47151       -8     
+ Partials        2782     2779       -3     

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[deadrabbit87]

Maybe you should run https://github.com/OpenEMS/openems/blob/develop/tools/prepare-commit.sh to prepare the PR for merging?

[iseeberg79]

Not required for these changes I assume, changes actually nothing

Thanks, for reviewing ;-)