Ng-service Packages

``@ashetm/ng-broadcast-channel`` is a library that simplify manipulation of ``BroadcastChannel`` API.

``@ashetm/ng-mediastream`` is a library that simplify manipulation of API ``MediaStream``.

``@ashetm/ng-openai`` is a wrapped library of ``openai`` for Angular.

``@ashetm/ng-utility`` is a library that provide some utilities classes, like pipes.