Bugfix mark related devices as unsynchronized after linknet add/remove

[indy-independence]

Mark related devices as unsynchronized after add/remove of linknet via API.

[codecov]

Codecov Report

Merging #209 (528ff91) into develop (88650e6) will decrease coverage by 0.00%.
The diff coverage is 40.00%.

@@             Coverage Diff             @@
##           develop     #209      +/-   ##
===========================================
- Coverage    59.61%   59.61%   -0.01%     
===========================================
  Files           60       60              
  Lines         6139     6143       +4     
===========================================
+ Hits          3660     3662       +2     
- Misses        2479     2481       +2     

Impacted Files	Coverage Δ
src/cnaas_nms/api/linknet.py	19.56% <0.00%> (-0.44%)	⬇️
src/cnaas_nms/db/linknet.py	79.41% <100.00%> (+0.62%)	⬆️

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