[CL-500] Add disclosure component and directive (#11865)

libs/components/src/disclosure/disclosure.component.ts

@@ -0,0 +1,21 @@
+import { Component, HostBinding, Input, booleanAttribute } from "@angular/core";
+
+let nextId = 0;
+
+@Component({
+  selector: "bit-disclosure",
+  standalone: true,
+  template: `<ng-content></ng-content>`,
+})
+export class DisclosureComponent {
+  /**
+   * Optionally init the disclosure in its opened state
+   */
+  @Input({ transform: booleanAttribute }) open?: boolean = false;
+
+  @HostBinding("class") get classList() {
+    return this.open ? "" : "tw-hidden";
+  }
+
+  @HostBinding("id") id = `bit-disclosure-${nextId++}`;
+}