clone active w/ flags on config create

[theganyo]

Clones current active configuration using any flag overrides when creating a new configuration.

Fixes #692

[codecov[bot]]

Codecov Report

Merging #695 (c1d669b) into main (8029db1) will increase coverage by 0.02%. The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main     #695      +/-   ##
==========================================
+ Coverage   55.49%   55.51%   +0.02%     
==========================================
  Files          93       93              
  Lines        7952     7956       +4     
==========================================
+ Hits         4413     4417       +4     
  Misses       3071     3071              
  Partials      468      468              

Impacted Files	Coverage Δ
cmd/registry/cmd/config/configurations/create.go	66.66% <100.00%> (+4.16%)	:arrow_up:

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