[IPC] Lower level API to access requirement_alignment and other extensions

[alamb]

Is your feature request related to a problem or challenge? Please describe what you are trying to do.

As part of #5554 @hzuo added the ability to enforce alignment

We could add a with_require_alignment to the FileDecoder

However, given the way the read_dictionary is structured, there was no way to add this option without breaking the API, as @tustvold noted https://github.com/apache/arrow-rs/pull/5554/files#r1549239776

Thus the require_alignment argument is now not exposed

Describe the solution you'd like

It would be nice to have a way to add new options in a way that did not break API compatibility going forward, and expose the requirement_alignment feature

Describe alternatives you've considered

@tustvold suggests https://github.com/apache/arrow-rs/pull/5554/files#r1550178314

possibly some sort of Decoder struct with a member function on it...

Ideally it would be designed so that it could be shared across things like StreamDecoder and FileDecoder

Additional context

[hzuo]

Small clarification: The Decoders (FileDecoder and StreamDecoder) do already expose with_require_alignment as part of #5554.

However, read_record_batch and read_dictionary don't expose the functionality right now - that's the subject of this issue.

Thanks for filing @alamb !

[alamb]

Thanks -- updated the title