DXCDT-572: Add ability to fetch all applications in ul customize cmd

[sergiught]

🔧 Changes

Add ability to fetch all applications in ul customize cmd in order to serve the data to the ULP Template https://auth0.com/docs/customize/universal-login-pages/universal-login-page-templates#available-variables.

📚 References

🔬 Testing

📝 Checklist

• All new/changed/fixed functionality is covered by tests (or N/A)
• I have added documentation for all new/changed functionality (or N/A)

[codecov-commenter]

Codecov Report

Attention: 4 lines in your changes are missing coverage. Please review.

Comparison is base (1088509) 72.42% compared to head (2edb952) 72.46%.

Additional details and impacted files

@@                             Coverage Diff                             @@
##           feature/auth0-universal-login-customize     #886      +/-   ##
===========================================================================
+ Coverage                                    72.42%   72.46%   +0.03%     
===========================================================================
  Files                                           93       93              
  Lines                                        12298    12329      +31     
===========================================================================
+ Hits                                          8907     8934      +27     
- Misses                                        2874     2877       +3     
- Partials                                       517      518       +1     

Files	Coverage Δ
internal/cli/universal_login_customize.go	46.08% <88.23%> (+3.15%)	⬆️

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