feat(init): no overwrite prompt when adding a new profile

[Codelax]

Improvement for init rework #2792
Lookup #2792 (comment)

Now we get an override prompt only when doing init for an existing profile. There is not prompt for scw init -p mynewprofile
Also the override prompt has changed, it only print the profile that will be override instead of the whole config

[codecov-commenter]

Codecov Report

Merging #3097 (aa56c5a) into master (68609e8) will increase coverage by 0.00%.
The diff coverage is 82.35%.

@@           Coverage Diff           @@
##           master    #3097   +/-   ##
=======================================
  Coverage   75.79%   75.80%           
=======================================
  Files         169      169           
  Lines       36631    36638    +7     
=======================================
+ Hits        27765    27772    +7     
  Misses       7903     7903           
  Partials      963      963           

Impacted Files	Coverage Δ
internal/namespaces/init/init.go	68.57% <40.00%> (+0.15%)	⬆️
internal/namespaces/init/prompt.go	24.11% <100.00%> (+3.37%)	⬆️