create design system categories components

my-workspace/projects/sae-lib/buttons/checkbox/checkbox.html

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+<p>checkbox works!</p>

my-workspace/projects/sae-lib/buttons/checkbox/checkbox.spec.ts

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+import { ComponentFixture, TestBed } from '@angular/core/testing';
+
+import { Checkbox } from './checkbox';
+
+describe('Checkbox', () => {
+  let component: Checkbox;
+  let fixture: ComponentFixture<Checkbox>;
+
+  beforeEach(async () => {
+    await TestBed.configureTestingModule({
+      imports: [Checkbox]
+    })
+    .compileComponents();
+
+    fixture = TestBed.createComponent(Checkbox);
+    component = fixture.componentInstance;
+    fixture.detectChanges();
+  });
+
+  it('should create', () => {
+    expect(component).toBeTruthy();
+  });
+});

my-workspace/projects/sae-lib/buttons/checkbox/checkbox.ts

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+import { Component } from '@angular/core';
+
+@Component({
+  selector: 'sae-checkbox',
+  imports: [],
+  templateUrl: './checkbox.html',
+  styleUrl: './checkbox.css'
+})
+export class Checkbox {
+
+}