Add Support for Passing databaseId in FireProvider

[joema-ww]

Description

• Currently, the library doesn't allow passing a databaseId when instantiating FireProvider. This makes it challenging to interact with multiple databases or target a specific Firestore instance within a project. It would be helpful to allow passing a databaseId parameter to the getFirestore method to support this functionality.
• This feature would be useful for projects interacting with multiple Firestore databases.

Expected Behavior

The FireProvider's configuration should accept an optional databaseId parameter.
If databaseId is provided, the library should use the specified database instance.
If databaseId is not provided, the default Firestore instance should be used.

Actual Behavior

The current implementation only interacts with the default Firestore database and doesn't allow switching between multiple Firestore databases in a project.