Implement all Contract Interfaces from TEPs

[anton-trunov]

• [ ] https://github.com/ton-blockchain/TEPs/blob/master/text/0064-token-data-standard.md
• [ ] https://github.com/ton-blockchain/TEPs/blob/master/text/0066-nft-royalty-standard.md
• [ ] https://github.com/ton-blockchain/TEPs/blob/master/text/0074-jettons-standard.md + https://github.com/ton-blockchain/TEPs/blob/master/text/0089-jetton-wallet-discovery.md
• [ ] https://github.com/ton-blockchain/TEPs/blob/master/text/0081-dns-standard.md
• [ ] https://github.com/ton-blockchain/TEPs/blob/master/text/0085-sbt-standard.md
• [ ] https://github.com/ton-blockchain/TEPs/pull/177

See if we need more language features to do that

Would be also interesting to try and port https://github.com/ton-blockchain/stablecoin-contract to Tact

Btw, we should check our implementations pass all the tests of the corresponding FunC implementations.

[Gusarich]

I'll work on that.

I also think it'll be good to have these implementations in our standard library (so that developer can easily begin interacting with Jettons or NFTs without defining message structures himself).

[anton-trunov]

I also think it'll be good to have these implementations in our standard library

This is a great suggestion! 👍

[Gusarich]

depends on #324