refactor(base): rename Experimental to Configure

[phm07]

For some commands we might want to do more than just mark them as experimental, e.g. change their generated description. This PR renames Experimental to Configure to make it clear that the function can be used to configure all aspects of the command, not only to mark it as experimental.

[codecov]

Codecov Report

❌ Patch coverage is 0% with 18 lines in your changes missing coverage. Please review.
✅ Project coverage is 72.80%. Comparing base (96fb6e3) to head (dda6d6f).

Files with missing lines	Patch %	Lines
internal/cmd/base/labels.go	0.00%	2 Missing and 2 partials ⚠️
internal/cmd/base/change_protection.go	0.00%	1 Missing and 1 partial ⚠️
internal/cmd/base/create.go	0.00%	1 Missing and 1 partial ⚠️
internal/cmd/base/delete.go	0.00%	1 Missing and 1 partial ⚠️
internal/cmd/base/describe.go	0.00%	1 Missing and 1 partial ⚠️
internal/cmd/base/list.go	0.00%	1 Missing and 1 partial ⚠️
internal/cmd/base/set_rdns.go	0.00%	1 Missing and 1 partial ⚠️
internal/cmd/base/update.go	0.00%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1438   +/-   ##
=======================================
  Coverage   72.80%   72.80%           
=======================================
  Files         300      300           
  Lines       11104    11104           
=======================================
  Hits         8084     8084           
  Misses       2120     2120           
  Partials      900      900           

Flag	Coverage Δ
e2e	51.25% <0.00%> (-0.01%)	⬇️
unit	67.74% <0.00%> (ø)

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