Tracking the Number of Loaded Documents in itemBuilder [Feature Request]

[AignerMatthias]

Is your feature request related to a problem? Please describe.
I am currently using the FirestorePagination plugin for a messaging app and encountered a scenario where I need to determine whether the current document being rendered is the last one in the list of loaded documents. This is particularly important for displaying certain UI elements differently for the last item and managing state transitions.

Describe the solution you'd like
Can you extend the itemBuilder with the parameter loadedDocumentCount.
So I can check if it's the last document which is loaded.
itemBuilder: (context, documentSnapshot, index, int loadedDocumentCount)

[OutdatedGuy]

I can see how this is useful, but adding an extra parameter to itemBuilder would result in a breaking change update.

What I can do it, add an extra paginationController parameter to the FirestorePagination class that can access various methods and data from state of FirestorePagination class like isEnded, isLoading, loadMoreDocs etc.

However, I'm currently busy with other stuff, so will implement this when I get some free time.

As always, PRs are welcomed.