Add auto-complete support

[synfinatic]

• Add proper auto-complete support for options and cached values
• Remove --cache option since we have a chicken/egg situation

Refs: #12

[codecov-commenter]

Codecov Report

Merging #129 (ced3319) into main (6a962a2) will increase coverage by 0.15%.
The diff coverage is 38.88%.

@@            Coverage Diff             @@
##             main     #129      +/-   ##
==========================================
+ Coverage   38.63%   38.79%   +0.15%     
==========================================
  Files           7        7              
  Lines        1131     1142      +11     
==========================================
+ Hits          437      443       +6     
- Misses        662      666       +4     
- Partials       32       33       +1     

Impacted Files	Coverage Δ
sso/awssso.go	0.00% <0.00%> (ø)
sso/cache.go	45.71% <0.00%> (+0.13%)	⬆️
sso/settings.go	53.07% <0.00%> (ø)
utils/utils.go	41.12% <70.00%> (+2.34%)	⬆️

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