Add "dev-status" API

[JamesMGreene]

JIRA has an undocumented "dev-status" API that is usual when JIRA is integrated with other tools like Stash (Bitbucket Server). For example:

To get info about branches and pull requests related to an issue:

https://{jiraHost}/rest/dev-status/latest/issue/detail?issueId={jiraIssueNumericId}&applicationType=stash&dataType=pullrequest

To get info about commits related to an issue:

https://{jiraHost}/rest/dev-status/latest/issue/detail?issueId={jiraIssueNumericId}&applicationType=stash&dataType=repository

I can also supply scrubbed example response bodies if desired.

[KanoYugoro]

Feel free to submit a PR. I haven't had time to maintain this lately. 😄

[satcheluniverse]

I am actually super interested in this, I will see if I can do anything to add these.

@JamesMGreene I assume both of these are GET calls?

[3zzy]

There's also one for the summary:

https://{jiraHost}/rest/dev-status/latest/issue/summary?issueId={jiraIssueNumericId}

[JamesMGreene]

@3zzy Good call. Luckily, that was already added in PR #177 as well.