Add doc reference HIP-765

[SimiHunjan]

Problem

HIP: https://hips.hedera.com/hip/hip-765

Protobuf PR: hashgraph/hedera-protobufs#313

This HIP proposes the addition of the metadata field to Non-Fungible Token Class, taking after the individual Non-Fungible Token (NFT) metadata field which was added in HIP-17. While HIP-17 metadata is scoped to a single NFT, here we propose adding metadata scoped to an entire token class.

TokenCreateTransactionBody
....
Metadata of the created token definition.
*/
bytes metadata = 23;

TokenUpdateTransactionBody
...
/**
* Metadata of the created token definition
*/
google.protobuf.BytesValue metadata = 16;

Solution

Add setting and updating the token metadata field for NFTs.

Alternatives

No response

Tasks

Beta Give feedback

1. Add HIP-765: Non-Fungible Token Metadata Field hedera-sdk-java#1745
   enhancement +1
   
2. Add HIP-765: Non-Fungible Token Metadata Field hedera-sdk-js#2188
   enhancement p1 +2
   
3. Add HIP-765: Non-Fungible Token Metadata Field hedera-sdk-go#885
   enhancement p1 +2
   
4. Add HIP-765: Non-Fungible Token Metadata Field hedera-sdk-cpp#674
   Feature Enhancement +1