Create custom role APIs

[mohaldu]

resolves #2493

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[gmlewis]

Hi @mohaldu - please don't use force-push in this repo... we always squash-and-merge anyway, so it is not necessary. See CONTRIBUTING.md for more details.

[gmlewis]

Thank you, @mohaldu!
Just a few changes, please, then we should be ready for a second review before merging.

[mohaldu]

Hi @gmlewis thanks for the review, all changes made

[gmlewis]

@mohaldu - please run go generate ./... at the top of the repo then push the resulting changes.
See CONTRIBUTING.md for more details.

[gmlewis]

Thank you, @mohaldu !
LGTM.

Awaiting second LGTM+Approval from any other contributor to this repo before merging.

[codecov]

Codecov Report

Merging #2494 (621667b) into master (38d7b16) will decrease coverage by 0.02%.
The diff coverage is 92.30%.

@@            Coverage Diff             @@
##           master    #2494      +/-   ##
==========================================
- Coverage   97.99%   97.97%   -0.03%     
==========================================
  Files         123      123              
  Lines       10774    10813      +39     
==========================================
+ Hits        10558    10594      +36     
- Misses        148      150       +2     
- Partials       68       69       +1     

Impacted Files	Coverage Δ
github/orgs_custom_roles.go	94.23% <92.30%> (-5.77%)	⬇️

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[valbeat]

@mohaldu LGTM!

[gmlewis]

Thank you, @valbeat !
Merging.