feat: expandable accordion in grades module

src/app/modules/assessments/list/assessments-tree-list.component.ts

@@ -0,0 +1,30 @@
+/*
+ * Copyright (C) 2022 StApps
+ *  This program is free software: you can redistribute it and/or modify it
+ *  under the terms of the GNU General Public License as published by the Free
+ *  Software Foundation, version 3.
+ *
+ *  This program is distributed in the hope that it will be useful, but WITHOUT
+ *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ *  FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ *  more details.
+ *
+ *  You should have received a copy of the GNU General Public License along with
+ *  this program. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+import {Component, Input} from '@angular/core';
+import {SCThings} from '@openstapps/core';
+
+@Component({
+  selector: 'assessments-tree-list',
+  templateUrl: 'assessments-tree-list.html',
+  styleUrls: ['assessments-tree-list.scss'],
+})
+export class AssessmentsTreeListComponent {
+  @Input() items?: Promise<SCThings[] | undefined>;
+
+  @Input() singleType = false;
+
+  @Input() groupingKey: string;
+}