localfs: make it fsspec-compatible

[skshetry]

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The LocalFileSystem is the only filesystem that is not fsspec-compatible. There's also DvcFileSystem and RepoFileSystem but they are virtual filesystem and needs LocalFileSystem to be first compatible.

https://github.com/iterative/dvc/blob/9b5ccb75549ab950ece23b7938ea0eea637c440d/dvc/fs/local.py#L15

This may help us use localfs in more locations instead of os.path/open functions. And also may get rid of the ugly inheritance chain with FileSystem/FSSpecWrapper.

[dberenbaum]

This may help us use localfs in more locations instead of os.path/open functions.

Is there any idea of what this will mean for performance?

[dberenbaum]

@skshetry Is this something you plan to take or research? Should it be on the project board?

[skshetry]

Is there any idea of what this will mean for performance?

We already use localfs on data-management systems or wherever we are filesystem agnostic.

Is this something you plan to take or research? Should it be on the project board?

I noticed this while working on #7331, but it's not required right now.

[dberenbaum]

Can we lower the priority?

[dberenbaum]

@skshetry What's the status of this issue?