Added AsciiDoc K3k CRDs docs automation

[enrichman]

This PR adds an automation to create an AsciiDoc crds.adoc file with the CRDs documentation.

This file should be used in the rancher/k3k-product-docs repo.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 60.76%. Comparing base (c16eae9) to head (35d45bd).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #600      +/-   ##
==========================================
+ Coverage   56.29%   60.76%   +4.47%     
==========================================
  Files          55       55              
  Lines        5294     5294              
==========================================
+ Hits         2980     3217     +237     
+ Misses       2026     1778     -248     
- Partials      288      299      +11     

Flag	Coverage Δ
cli	54.20% <ø> (-0.33%)	⬇️
controller	56.90% <ø> (+6.44%)	⬆️
e2e	56.90% <ø> (+6.44%)	⬆️
unit	37.59% <ø> (-0.04%)	⬇️

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