Add support for Firestore Enterprise Pipeline Queries

Firestore has recently launched Pipeline operations in Enterprise edition.
These powerful queries allow for complex transformations, aggregations, and
filtering that go beyond what Core operations currently support.

It would be beneficial for AngularFire to provide wrappers
for Pipeline operations to maintain parity with the Firestore JS SDK and
provide a better Angular developer experience.

In my opinion, the ability to perform searches using regex is the most important feature.

Has a date already been set for implementation?

Thanks for your work.

Comienza revisando los wrappers de Firestore existentes de AngularFire y la API Enterprise Pipeline Queries del SDK de Firestore para JS. Confirma las operaciones de Pipeline compatibles, incluidas las búsquedas con expresiones regulares, y después define la superficie del wrapper necesaria para la paridad con Angular; se considerará terminado cuando las operaciones compatibles estén expuestas y cubiertas por pruebas adecuadas.

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