APPS-1500 Add validation for ASBX restore configuration

[filkeith]

• added restore config validation for asbx
• fixed documentation

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 43.33333% with 34 lines in your changes missing coverage. Please review.

Project coverage is 78.58%. Comparing base (87e1c5b) to head (e4c66b3).

Files with missing lines	Patch %	Lines
cmd/internal/app/asrestore.go	0.00%	31 Missing ⚠️
client.go	0.00%	2 Missing and 1 partial ⚠️

Additional details and impacted files

@@               Coverage Diff               @@
##           xdr-support     #217      +/-   ##
===============================================
- Coverage        78.67%   78.58%   -0.09%     
===============================================
  Files              110      110              
  Lines            10031    10079      +48     
===============================================
+ Hits              7892     7921      +29     
- Misses            1642     1660      +18     
- Partials           497      498       +1     

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