RFR: 2069: Add group and collaborator methods to Forge and HostedRepository

[Magnus Ihse Bursie]

On Thu, 19 Oct 2023 21:19:35 GMT, Erik Joelsson <erikj at openjdk.org> wrote:

> This patch adds some new methods on Forge and HostedRepository to interact with forge groups and repository collaborators respectively. It also adds a lot more possible customization to the test class `CensusBuilder` as well as adding some missing `final` declarations in test classes. All the new API calls have manual tests added. It's quite large for what it is, but isn't really affecting any current production code.

forge/src/test/java/org/openjdk/skara/forge/gitlab/GitLabRestApiTest.java line 69:

> 67: 
> 68:     @Test
> 69:     void testFilesUrl() throws IOException {

Nice cleanup...

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PR Review Comment: https://git.openjdk.org/skara/pull/1573#discussion_r1366950434