Reuse file descriptors for LocalFileSystem object storage

### Is your feature request related to a problem or challenge?

The ObjectStore implementation is stateless and doesn't allow for passing `File` descriptors.
This means for every request it's doing a `File::open` (and close) call, which creates overhead (mainly when doing a lot of small requests, e.g. with predicate pushdown enabled).

### Describe the solution you'd like

Implement an object store implementation for DataFusion that opens / reuses the `File`s for each path.

We can use `Arc` stored in hashmap for each file / path + read_at (stateless file read) to minimize overhead and maximize concurrency.

### Describe alternatives you've considered

_No response_

### Additional context

Also see

https://github.com/apache/arrow-rs-object-store/issues/622
https://github.com/apache/arrow-rs-object-store/issues/614

Inizia con i punti di ingresso ObjectStore e LocalFileSystem di DataFusion, quindi esamina le issue collegate #622 e #614 di arrow-rs-object-store per individuare i vincoli correlati. Il lavoro è completo quando LocalFileSystem riutilizza i descrittori File aperti per percorso, preservando le letture concorrenti senza stato ed evitando un ciclo di apertura/chiusura per ogni richiesta.

Scritto dal modello di indicizzazione a partire dal testo della issue.