Add option for administrator to reset user 2FA (#14243)

* Frontend

* Backend

* only show 2FA-Reset option if posible

modules/auth/admin.go

@@ -42,6 +42,7 @@ type AdminEditUserForm struct {
 	AllowImportLocal        bool
 	AllowCreateOrganization bool
 	ProhibitLogin           bool
+	Reset2FA                bool `form:"reset_2fa"`
 }
 
 // Validate validates form fields