Add klogs plugin

[ricoberger]

• I added a CHANGELOG entry for this change.
• I adjusted the corresponding documentation for this change.
• I adjusted the values.yaml file and the documentation for all values.

[codecov-commenter]

Codecov Report

Merging #336 (b79360f) into rework-kobs-architecture (5bb8acc) will decrease coverage by 2.47%.
The diff coverage is 29.07%.

@@                     Coverage Diff                      @@
##           rework-kobs-architecture     #336      +/-   ##
============================================================
- Coverage                     48.43%   45.95%   -2.48%     
============================================================
  Files                            89       94       +5     
  Lines                          5643     6472     +829     
============================================================
+ Hits                           2733     2974     +241     
- Misses                         2847     3433     +586     
- Partials                         63       65       +2     

Impacted Files	Coverage Δ
plugins/plugin-klogs/pkg/instance/aggregation.go	7.45% <7.45%> (ø)
plugins/plugin-klogs/pkg/instance/instance.go	16.07% <16.07%> (ø)
plugins/plugin-klogs/cmd/klogs.go	16.47% <16.47%> (ø)
plugins/plugin-klogs/pkg/instance/helpers.go	100.00% <100.00%> (ø)
plugins/plugin-klogs/pkg/instance/logs.go	100.00% <100.00%> (ø)

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