Handle NotifyCreateRef as create branch in feeds (#14245)

Co-authored-by: Lauris BH <lauris@nix.lv>

options/locale/locale_en-US.ini

@@ -2495,6 +2495,7 @@ mirror_sync_delete = synced and deleted reference <code>%[2]s</code> at <a href=
 approve_pull_request = `approved <a href="%s/pulls/%s">%s#%[2]s</a>`
 reject_pull_request = `suggested changes for <a href="%s/pulls/%s">%s#%[2]s</a>`
 publish_release  = `released <a href="%s/releases/tag/%s"> "%[4]s" </a> at <a href="%[1]s">%[3]s</a>`
+create_branch = created branch <a href="%[1]s/src/branch/%[2]s">%[3]s</a> in <a href="%[1]s">%[4]s</a>
 
 [tool]
 ago = %s ago