Optimize JSI to ByteBuffer conversion in RevocationRegistry

[AhmedFatthy1040]

Added direct JSI to ByteBuffer conversion by implementing jsiToValue<ByteBuffer>, eliminating the intermediate string conversion step. Applied this optimization to revocationRegistryFromJson as specified in issue hyperledger/anoncreds-rs#176. This makes the code cleaner and more efficient by reducing unnecessary memory allocations.

[swcurran]

@andrewwhitehead — can you please take a look and approve? Looks fine to me, but I’m not knowledgeable enough in the code.

[swcurran]

Actually, it should be @berendsliedrecht or @TimoGlastra that takes a look, pretty please.

[berendsliedrecht]

Has this been tested in the React Native example app? Can you add a screenshot?

[AhmedFatthy1040]

@swcurran @berendsliedrecht Thanks for your review! I actually built the code, and it compiled successfully without any errors. I tried the React Native example as you suggested, but I noticed that it only uses anoncreds.version(). So I'm not sure if that's enough to properly test the revocationRegistryFromJson function.

Here are the screenshots:

[berendsliedrecht]

@AhmedFatthy1040 Thanks! Did you check all the places where it could be replaced? Or was it only the revregdeffromjson?

Re the version 0.2.0, thats fine. It is mainly a test to see that everything compiled correctly.

[AhmedFatthy1040]

@berendsliedrecht I've now checked all the functions in similar situations and handled them as well. After making the changes, I tested the app and it compiled successfully.

[berendsliedrecht]

Thanks for the PR @AhmedFatthy1040