Add API to check if team has repo access (#19540)

* Add API to check if team has repo access

* Add test case

routers/api/v1/api.go

@@ -1121,7 +1121,8 @@ func Routes() *web.Route {
 				m.Get("", org.GetTeamRepos)
 				m.Combo("/{org}/{reponame}").
 					Put(org.AddTeamRepository).
-					Delete(org.RemoveTeamRepository)
+					Delete(org.RemoveTeamRepository).
+					Get(org.GetTeamRepo)
 			})
 		}, orgAssignment(false, true), reqToken(), reqTeamMembership())