Add GetUserTeams (#18499) (#18531)

Backport #18499

* Correct use `UserID` in `SearchTeams`

- Use `UserID` in the `SearchTeams` function, currently it was useless
to pass such information. Now it does a INNER statement to `team_user`
which obtains UserID -> TeamID data.
- Make OrgID optional.
- Resolves #18484

* Seperate searching specific user

* Add condition back

* Use correct struct type

Co-authored-by: Gusted <williamzijl7@hotmail.com>
Co-authored-by: 6543 <6543@obermui.de>
Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
Co-authored-by: techknowlogick <techknowlogick@gitea.io>

modules/repository/create_test.go

@@ -23,7 +23,7 @@ func TestIncludesAllRepositoriesTeams(t *testing.T) {
 
 	testTeamRepositories := func(teamID int64, repoIds []int64) {
 		team := unittest.AssertExistsAndLoadBean(t, &models.Team{ID: teamID}).(*models.Team)
-		assert.NoError(t, team.GetRepositories(&models.SearchTeamOptions{}), "%s: GetRepositories", team.Name)
+		assert.NoError(t, team.GetRepositories(&models.SearchOrgTeamOptions{}), "%s: GetRepositories", team.Name)
 		assert.Len(t, team.Repos, team.NumRepos, "%s: len repo", team.Name)
 		assert.Len(t, team.Repos, len(repoIds), "%s: repo count", team.Name)
 		for i, rid := range repoIds {