* move GitCommit to APIFormat convertion into convert package

* rename Commit convert functions

* move stopwatch to api convertion into convert package & rm unused code & extend test

* fix compare time

* Gitea not Gogs ;)

* Add Created and Updated to Milestone table and expose via API

* Expose to UI - To Overloaded ?!?

* fix unit test

Co-authored-by: techknowlogick <techknowlogick@gitea.io>

Expose IsLocked Property

* Label: delete .APIFormat() and use convert.ToLabel()

* move issue APIFormat too

* add missing one

* move TEST too

* handle error -> return empty APIIssue

* Apply suggestions from code review

Co-Authored-By: guillep2k <18600385+guillep2k@users.noreply.github.com>

Co-authored-by: zeripath <art27@cantab.net>
Co-authored-by: guillep2k <18600385+guillep2k@users.noreply.github.com>