feat: operations base path config option

[danielgtaylor]

This adds a new config option to override the operation base path when the API base path has a path component.

Also included are some improvements to the config JSON schema to make editing easier with suggested auth params and auth schema name values.

[codecov]

Codecov Report

Merging #209 (5a80159) into main (2242e20) will decrease coverage by 0.04%.
The diff coverage is 50.00%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #209      +/-   ##
==========================================
- Coverage   75.66%   75.62%   -0.04%     
==========================================
  Files          26       26              
  Lines        3550     3553       +3     
==========================================
+ Hits         2686     2687       +1     
- Misses        665      666       +1     
- Partials      199      200       +1     

Files Changed	Coverage Δ
cli/apiconfig.go	83.80% <ø> (ø)
cli/api.go	49.20% <50.00%> (-0.39%)	⬇️

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