Can the private-keys package be extended to support RSA as a IPrivateKeyFormat?

I want to use Torus to support the storage and custody of RSA keys. Looking at the interfaces within the `private-keys` package this seems possible?

However, I don't think RSA keys would be supported by a lot of the core functions in your library - like `genrateShares` etc. which seem to be catered for elliptic curve keys.

Please correct my assumptions and let me know if what I am requesting makes sense at all.

Start by reviewing the interfaces within the `private-keys` package and the core functions mentioned, especially `genrateShares`, to determine where elliptic-curve assumptions apply. Define whether RSA support is feasible across the package and document the required scope and compatibility expectations before implementation.

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