Stargaze Names Collection

Defines on-chain metadata for Stargaze Names, a Cosmos / Interchain name service.

```rs pub struct NFT { pub collection: Addr, pub token_id: String, }

pub struct TextRecord { pub name: String, // "twitter" pub value: String, // "shan3v" pub verified_at: Option, }

pub struct Metadata { pub bio: Option, pub profile: Option, pub records: Vec, pub extension: T, } ```