feat(rx): add directive which uses intersection-observer

Author: michaelbe812

libs/rx/platform/src/lib/directives/observe-intersection.directive.spec.ts

@@ -0,0 +1,8 @@
+import {ObserveIntersectionDirective} from './observe-intersection.directive';
+
+describe('ObserveIntersectionDirective', () => {
+  it('should create an instance', () => {
+    const directive = new ObserveIntersectionDirective();
+    expect(directive).toBeTruthy();
+  });
+});

libs/rx/platform/src/lib/directives/observe-intersection.directive.ts

@@ -0,0 +1,19 @@
+import {Directive, NgModule} from '@angular/core';
+import {CommonModule} from '@angular/common';
+
+@Directive({
+  selector: '[angularKitObserveIntersection]',
+})
+export class ObserveIntersectionDirective {
+  // todo
+  // siehe angular-collection
+  // evtl auch inview directive portieren
+  constructor() {}
+}
+
+@NgModule({
+  imports: [CommonModule],
+  declarations: [ObserveIntersectionDirective],
+  exports: [ObserveIntersectionDirective],
+})
+export class ObserveIntersectionDirectiveModule {}