[FEATURE] Enhancement/delete repo list

[victor-schumacher]

- What I did
Added a list of repositories when use the comand:
$ rit delete repo

- How I did it
Making some changes at pkg/cmd/delete_repo.go

- How to verify it
Deleting a repo, like this:

[codecov-io]

Codecov Report

Merging #75 into master will decrease coverage by 0.15%.
The diff coverage is 42.10%.

@@            Coverage Diff             @@
##           master      #75      +/-   ##
==========================================
- Coverage   44.82%   44.66%   -0.16%     
==========================================
  Files          56       56              
  Lines        2057     2071      +14     
==========================================
+ Hits          922      925       +3     
- Misses        980      992      +12     
+ Partials      155      154       -1     

Impacted Files	Coverage Δ
pkg/cmd/delete_repo.go	50.00% <42.10%> (-25.00%)	⬇️

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[kaduartur]

List repositories when rit delete repo