repos-{owner}/{repo}-collaborators-{username}

Number of APIs: 4

1. Check if a user is a repository collaborator GET {{baseUrl}}/repos/:owner/:repo/collaborators/:username

2. Add a repository collaborator PUT {{baseUrl}}/repos/:owner/:repo/collaborators/:username

3. Remove a repository collaborator DELETE {{baseUrl}}/repos/:owner/:repo/collaborators/:username

4. Get repository permissions for a user GET {{baseUrl}}/repos/:owner/:repo/collaborators/:username/permission