Expose affiliation parameter when listing collaborators

[hnrkndrssn]

Also adds support for the Nested Teams preview API

Fixes #2036

[codecov]

Codecov Report

Merging #2043 into master will increase coverage by 0.06%.
The diff coverage is 97.61%.

@@            Coverage Diff             @@
##           master    #2043      +/-   ##
==========================================
+ Coverage   70.73%   70.79%   +0.06%     
==========================================
  Files         537      538       +1     
  Lines       14106    14139      +33     
==========================================
+ Hits         9978    10010      +32     
- Misses       4128     4129       +1

Impacted Files	Coverage Δ
...ctokit/Models/Request/SearchRepositoriesRequest.cs	76.69% <100%> (ø)	⬆️
Octokit/Clients/RepoCollaboratorsClient.cs	76.13% <100%> (+4.51%)	⬆️
Octokit/Models/Request/SearchIssuesRequest.cs	91.89% <100%> (ø)	⬆️
Octokit/Models/Request/SearchCodeRequest.cs	92.72% <100%> (ø)	⬆️
...ctive/Clients/ObservableRepoCollaboratorsClient.cs	76% <100%> (+5.5%)	⬆️
...it/Models/Request/SearchIssuesRequestExclusions.cs	97.72% <100%> (ø)	⬆️
Octokit/Models/Request/SearchUsersRequest.cs	96.77% <100%> (ø)	⬆️
...odels/Request/RepositoryCollaboratorListRequest.cs	80% <80%> (ø)

[shiftkey]

@hnrkndrssn I'm feeling pretty good with how this looks. Anything you're waiting on?

[hnrkndrssn]

Anything you're waiting on?

I was going to write some tests for it, just got side tracked with life-stuff :) I'll try to get those last little things in tonight and mark the PR ready for review once done 👍

[shiftkey]

[hnrkndrssn]

[shiftkey]

Thanks again @hnrkndrssn for the contribution!

[shiftkey]

release_notes: add support for filtering repository collaborators by their affiliation

[Jacobtarango21]