Gauge SelectableField by k8s 1.30 version

[Danil-Grigorev]

Motivation

A follow up on #1605 from discussion.

Solution

Skip generation of fields for crd() for pre-1.30 version of k8s-openapi

Potentially overlaps with #1609

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 75.3%. Comparing base (1addf43) to head (2b5efb3).
Report is 1 commits behind head on main.

Additional details and impacted files

@@          Coverage Diff          @@
##            main   #1610   +/-   ##
=====================================
  Coverage   75.3%   75.3%           
=====================================
  Files         82      82           
  Lines       7340    7340           
=====================================
  Hits        5524    5524           
  Misses      1816    1816           

Files with missing lines	Coverage Δ
kube-derive/src/custom_resource.rs	81.2% <ø> (ø)