[ews-app] parse and save data about PR id and repo in django app db. The data which was configured in https://bugs.webkit.org/show_bug.cgi?id=242477
Pull request: https://github.com/WebKit/WebKit/pull/2231
Pull request: https://github.com/apple/WebKit/pull/13
Committed 252284@main (1d83511d3e32): <https://commits.webkit.org/252284@main> Reviewed commits have been landed. Closing PR #2231 and removing active labels.
<rdar://problem/96685247>