Suggestion: Move LocalFile Schema from Computation to Core

[Peyman-N]

As openMINDS expands, we increasingly encounter scenarios where data is still stored on local hard drives. This happens notably when using tools like bids2openminds, but also in other systems where files are not uploaded online or are inaccessible through standard web links.

We are facing growing limitations because the current File schema in the core module was primarily designed with online files in mind. To better support local file references across different openMINDS domains, not just computation, I suggest moving the LocalFile schema from openMINDS_computation into openMINDS_core.

This would make local file handling a first-class feature in the core schema, improving flexibility for use cases beyond computational workflows.