Add sorting by owner/team for list search on user (#585)

- Add sorting by Owner and Team for the user list issues endpoint.
- Ref: https://github.com/go-gitea/gitea/pull/16662

Reviewed-on: https://gitea.com/gitea/go-sdk/pulls/585
Reviewed-by: John Olheiser <john.olheiser@gmail.com>
Reviewed-by: Lunny Xiao <xiaolunwen@gmail.com>
Co-authored-by: Gusted <williamzijl7@hotmail.com>
Co-committed-by: Gusted <williamzijl7@hotmail.com>

gitea/issue.go

@@ -71,6 +71,10 @@ type ListIssueOption struct {
 	AssignedBy string
 	// filter by username mentioned
 	MentionedBy string
+	// filter by owner (only works on ListIssues on User)
+	Owner string
+	// filter by team (requires organization owner parameter to be provided and only works on ListIssues on User)
+	Team string
 }
 
 // StateType issue state type
@@ -135,6 +139,12 @@ func (opt *ListIssueOption) QueryEncode() string {
 	if len(opt.MentionedBy) > 0 {
 		query.Add("mentioned_by", opt.MentionedBy)
 	}
+	if len(opt.Owner) > 0 {
+		query.Add("owner", opt.Owner)
+	}
+	if len(opt.Team) > 0 {
+		query.Add("team", opt.MentionedBy)
+	}
 
 	return query.Encode()
 }