feat(ca): add ability to set custom org and expiry

[nothinux]

Add ability to set custom organization and expiry in CA creation.

Resolved #4

[codecov-commenter]

Codecov Report

Merging #5 (286299c) into master (6fb2638) will increase coverage by 0.26%.
The diff coverage is 96.42%.

@@            Coverage Diff             @@
##           master       #5      +/-   ##
==========================================
+ Coverage   78.61%   78.87%   +0.26%     
==========================================
  Files           5        5              
  Lines         678      677       -1     
==========================================
+ Hits          533      534       +1     
  Misses        101      101              
+ Partials       44       42       -2     

Impacted Files	Coverage Δ
cmd/certify/command.go	74.03% <0.00%> (-2.28%)	⬇️
cmd/certify/main.go	60.75% <ø> (ø)
cmd/certify/helper.go	83.79% <100.00%> (+0.99%)	⬆️

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