Add GetUserTeams (#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: 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>

routers/web/org/teams.go

@@ -319,7 +319,7 @@ func TeamRepositories(ctx *context.Context) {
 	ctx.Data["Title"] = ctx.Org.Team.Name
 	ctx.Data["PageIsOrgTeams"] = true
 	ctx.Data["PageIsOrgTeamRepos"] = true
-	if err := ctx.Org.Team.GetRepositories(&models.SearchTeamOptions{}); err != nil {
+	if err := ctx.Org.Team.GetRepositories(&models.SearchOrgTeamOptions{}); err != nil {
 		ctx.ServerError("GetRepositories", err)
 		return
 	}