[WIP] k8s extension integration

[dgolovin]

[codecov]

Codecov Report

Merging #828 into master will decrease coverage by 1.77%.
The diff coverage is 30.76%.

@@            Coverage Diff             @@
##           master     #828      +/-   ##
==========================================
- Coverage   94.76%   92.98%   -1.78%     
==========================================
  Files          23       23              
  Lines        1376     1412      +36     
  Branches      222      233      +11     
==========================================
+ Hits         1304     1313       +9     
- Misses         72       99      +27

Impacted Files	Coverage Δ
src/extension.ts	76.98% <30.76%> (-20.8%)	⬇️

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[gorkem]

@dgolovin Can we also add a command to open the OpenShift Console for OpenShift clusters?

[dgolovin]

Released in #849.

[dgolovin]

@gorkem I have added new issue for Open Console command #875.