add components from angular-lib

my-workspace/projects/my-lib/essai/essai.html

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+<div class="essai">
+  <h1>essai composant depuis la lib</h1>
+</div>

my-workspace/projects/my-lib/essai/essai.spec.ts

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

my-workspace/projects/my-lib/essai/essai.ts

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