Use id to access orgs (#1873)

closes #1743 

fixes: setting secrets for own user namespace

- create org in database
- use orgID for org related APIs

Co-authored-by: 6543 <6543@obermui.de>

server/forge/gitlab/gitlab.go

@@ -680,6 +680,48 @@ func (g *GitLab) OrgMembership(ctx context.Context, u *model.User, owner string)
 	return &model.OrgPerm{}, nil
 }
 
+func (g *GitLab) Org(ctx context.Context, u *model.User, owner string) (*model.Org, error) {
+	client, err := newClient(g.url, u.Token, g.SkipVerify)
+	if err != nil {
+		return nil, err
+	}
+
+	users, _, err := client.Users.ListUsers(&gitlab.ListUsersOptions{
+		ListOptions: gitlab.ListOptions{
+			Page:    1,
+			PerPage: 1,
+		},
+		Username: gitlab.String(owner),
+	})
+	if len(users) == 1 && err == nil {
+		return &model.Org{
+			Name:    users[0].Username,
+			IsUser:  true,
+			Private: users[0].PrivateProfile,
+		}, nil
+	}
+
+	groups, _, err := client.Groups.ListGroups(&gitlab.ListGroupsOptions{
+		ListOptions: gitlab.ListOptions{
+			Page:    1,
+			PerPage: 1,
+		},
+		Search: gitlab.String(owner),
+	}, gitlab.WithContext(ctx))
+	if err != nil {
+		return nil, err
+	}
+
+	if len(groups) != 1 {
+		return nil, fmt.Errorf("could not find org %s", owner)
+	}
+
+	return &model.Org{
+		Name:    groups[0].Name,
+		Private: groups[0].Visibility != gitlab.PublicVisibility,
+	}, nil
+}
+
 func (g *GitLab) loadChangedFilesFromMergeRequest(ctx context.Context, tmpRepo *model.Repo, pipeline *model.Pipeline, mergeIID int) (*model.Pipeline, error) {
 	_store, ok := store.TryFromContext(ctx)
 	if !ok {