[MM-21517] Team Member Manage User Modal not display correct roles (#14043)

* join on the users table and order by username

* don't inclue users who have been deleted

* Address PR comments

* update tests

* fix linting

* fix linting

* include ExcludeDeletedUsers flag

* fix gofmt

* fix nil teamMembersGetOptions

* fix gofmt error

* Add Unit Tests

* fix gofmt bugs

* partially address comments

* fix incorrect import

* Address Comments and fix golint errors

* store mocks

* address PR comments about tests and styling

* Update model/team_member.go

Co-Authored-By: Jesse Hallam <jesse.hallam@gmail.com>

* Address PR comments

* update client function name

Co-authored-by: mattermod <mattermod@users.noreply.github.com>
Co-authored-by: Jesse Hallam <jesse.hallam@gmail.com>

model/team_member.go

@@ -11,6 +11,10 @@ import (
 	"strings"
 )
 
+const (
+	USERNAME = "Username"
+)
+
 type TeamMember struct {
 	TeamId        string `json:"team_id"`
 	UserId        string `json:"user_id"`
@@ -44,6 +48,17 @@ type EmailInviteWithError struct {
 	Error *AppError `json:"error"`
 }
 
+type TeamMembersGetOptions struct {
+	// Sort the team members. Accepts "Username", but defaults to "Id".
+	Sort string
+
+	// If true, exclude team members whose corresponding user is deleted.
+	ExcludeDeletedUsers bool
+
+	// Restrict to search in a list of teams and channels
+	ViewRestrictions *ViewUsersRestrictions
+}
+
 func (o *TeamMember) ToJson() string {
 	b, _ := json.Marshal(o)
 	return string(b)