[FEATURE REQUEST] Global attrib to enable/disable formats

[lgritz]

From a slack conversation, maybe it would be helpful to have a global OIIO:attribute() way to set at runtime a specific list of which file formats OIIO is willing to read or write?

This is settable at build time now, of course. But I could imagine it being helpful, especially in cases where you have to live with whichever libOpenImageIO you find on your system, to be able to restrict which formats you support. One reason might be security or reliability -- essentially limiting the attack surface area to just the formats a particular app anticipates needing?

It would be fairly straightforward to implement.

[Rahul-Baradol]

Would like to pick this!
Have been able to build locally, and will figure out the changes...

Could you please assign this to me?

[MayankKumarSingh1]

Is this issue still open and needs to be assigned?

[lgritz]

No, as you can see above, there is a PR currently in review that implements it, but I think it might need one more round of edits before it's ready to be merged.