[MM-44168] Add feature to restore archived user groups (#20369)

* Add undelete feature, add mocks, tests

* Rename undelete->restore

* make store-layers

* make app-layers

* Store -> Store()

* Lint fixes

Co-authored-by: Mattermod <mattermod@users.noreply.github.com>

api4/group_test.go

@@ -214,6 +214,33 @@ func TestDeleteGroup(t *testing.T) {
 	require.NoError(t, err)
 	CheckOKStatus(t, response)
 }
+
+func TestUndeleteGroup(t *testing.T) {
+	th := Setup(t)
+	defer th.TearDown()
+
+	th.App.Srv().SetLicense(model.NewTestLicenseSKU(model.LicenseShortSkuProfessional))
+
+	validGroup, appErr := th.App.CreateGroup(&model.Group{
+		DisplayName: "dn_" + model.NewId(),
+		Name:        model.NewString("name" + model.NewId()),
+		Source:      model.GroupSourceCustom,
+	})
+	assert.Nil(t, appErr)
+
+	_, response, err := th.Client.DeleteGroup(validGroup.Id)
+	require.NoError(t, err)
+	CheckOKStatus(t, response)
+
+	_, response, err = th.Client.RestoreGroup(validGroup.Id, "")
+	require.NoError(t, err)
+	CheckOKStatus(t, response)
+
+	_, response, err = th.Client.RestoreGroup(validGroup.Id, "")
+	require.Error(t, err)
+	CheckNotFoundStatus(t, response)
+}
+
 func TestPatchGroup(t *testing.T) {
 	th := Setup(t)
 	defer th.TearDown()