Feature/link counter

[zorkow]

Adds a link counter as follow up of MJ PR#1335

[codecov]

Codecov Report

❌ Patch coverage is 48.48485% with 34 lines in your changes missing coverage. Please review.
✅ Project coverage is 91.43%. Comparing base (90a6c1d) to head (ca69e45).
⚠️ Report is 3 commits behind head on develop.

Files with missing lines	Patch %	Lines
ts/common/processor_factory.ts	48.38%	32 Missing ⚠️
ts/common/system.ts	33.33%	2 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop     #826      +/-   ##
===========================================
- Coverage    91.49%   91.43%   -0.06%     
===========================================
  Files          165      165              
  Lines        40006    40050      +44     
  Branches      4314     4329      +15     
===========================================
+ Hits         36603    36620      +17     
- Misses        3403     3430      +27     

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