docs: Update ecosystem section

[terrytangyuan]

Fixes #6875. Added Katib to diagram and added a few missing projects in text.

Signed-off-by: Yuan Tang terrytangyuan@gmail.com

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[codecov]

Codecov Report

Merging #6878 (b3ef89e) into master (c962bb1) will increase coverage by 0.00%.
The diff coverage is n/a.

❗ Current head b3ef89e differs from pull request most recent head d7fb138. Consider uploading reports for the commit d7fb138 to get more accurate results

@@           Coverage Diff           @@
##           master    #6878   +/-   ##
=======================================
  Coverage   48.68%   48.69%           
=======================================
  Files         265      265           
  Lines       19161    19161           
=======================================
+ Hits         9329     9330    +1     
  Misses       8785     8785           
+ Partials     1047     1046    -1     

Impacted Files	Coverage Δ
workflow/metrics/server.go	15.78% <0.00%> (-3.51%)	⬇️
workflow/controller/operator.go	71.21% <0.00%> (+0.14%)	⬆️

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