feat: use enums in request

[sdghchj]

Describe the PR
use enums in request

Relation issue
#1416

[codecov]

Codecov Report

Base: 85.16% // Head: 85.13% // Decreases project coverage by -0.02% ⚠️

Coverage data is based on head (de8ad3b) compared to base (e50db3e).
Patch coverage: 100.00% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1417      +/-   ##
==========================================
- Coverage   85.16%   85.13%   -0.03%     
==========================================
  Files          19       19              
  Lines        3620     3606      -14     
==========================================
- Hits         3083     3070      -13     
+ Misses        459      458       -1     
  Partials       78       78              

Impacted Files	Coverage Δ
parser.go	94.50% <ø> (+0.21%)	⬆️
operation.go	96.10% <100.00%> (-0.17%)	⬇️
gen/gen.go	93.51% <0.00%> (+0.03%)	⬆️

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[Jictyvoo]

Tested on latest version, it works if I use the enum type directly, but if I have an array, it stop to work.

Described it on: #1521