Support APIs to access the Default Default permissions for Projects

[dodie]

Feature Request and Expected Behavior

Provide access for the following endpoints:

• /rest/api/1.0/projects/PROJECT/permissions/PROJECT_ADMIN/all
• /rest/api/1.0/projects/PROJECT/permissions/PROJECT_WRITE/all
• /rest/api/1.0/projects/PROJECT/permissions/PROJECT_READ/all

Sadly these endpoints seem to be not well documented, but they are available to use, and also here's a related ticket with more information: BSERV-12527

Current Behavior and Context

To manage / monitor permission setup of project permissions in a Bitbucket setup. Most user and group related permissions can be accessed via bitbucketClient().api().projectApi().listPermissionsByGroup and bitbucketClient().api().projectApi().listPermissionsByUser, but the Default permissions are not supported by the client.

[cdancy]

@dodie I don't currently have time to knock this out. Would you be up for sending in a PR? I can certainly work with you on the code if need be.

[dodie]

@cdancy Sure, I'll try to find time to do it.