feat(client): add heartbeat as client API function

[Schille]

Signed-off-by: Michael Schilonka [email protected]

[codecov]

Codecov Report

Merging #63 (b678642) into main (8f9d454) will decrease coverage by 32.65%.
The diff coverage is 82.60%.

@@             Coverage Diff             @@
##             main      #63       +/-   ##
===========================================
- Coverage   86.09%   53.45%   -32.65%     
===========================================
  Files          49       50        +1     
  Lines        1705     1721       +16     
===========================================
- Hits         1468      920      -548     
- Misses        237      801      +564     

Impacted Files	Coverage Δ
client/beiboot/api/heartbeat.py	81.81% <81.81%> (ø)
client/beiboot/api/__init__.py	100.00% <100.00%> (ø)
operator/main.py	0.00% <0.00%> (-90.91%)	⬇️
operator/beiboot/comps/gefyra.py	0.00% <0.00%> (-85.72%)	⬇️
operator/beiboot/provider/k3s/utils.py	25.00% <0.00%> (-75.00%)	⬇️
operator/beiboot/comps/ghostunnel.py	18.96% <0.00%> (-67.25%)	⬇️
operator/beiboot/resources/crds.py	33.33% <0.00%> (-66.67%)	⬇️
operator/beiboot/handler/clusters.py	25.00% <0.00%> (-60.72%)	⬇️
operator/beiboot/handler/configure.py	40.00% <0.00%> (-60.00%)	⬇️
operator/beiboot/clusterstate.py	27.94% <0.00%> (-59.83%)	⬇️
... and 11 more

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[buschNT]

nice