use connector status for charging switch

[lbbrhzn]

closes #357

[codecov]

Codecov Report

Merging #359 (7678ecc) into main (2dc11e9) will increase coverage by 0.17%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main     #359      +/-   ##
==========================================
+ Coverage   85.16%   85.33%   +0.17%     
==========================================
  Files          10       10              
  Lines        1173     1173              
  Branches      172      172              
==========================================
+ Hits          999     1001       +2     
+ Misses        102      101       -1     
+ Partials       72       71       -1     

Impacted Files	Coverage Δ
custom_components/ocpp/switch.py	95.31% <ø> (+3.12%)	⬆️

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