ERC-1155 Support

Basic support for ERC-1155s

ERC-1155 contracts are designed to support multiple token types within a single contract. This standard is being adopted rapidly for efficiency and optimization, and is being used to bundle multi-token transactions and approvals while supporting both fungible and non-fungible tokens.

Recognition and labelling for ERC-1155 contracts, indexing instance balances for both FTs and NFTs, parsing single and batched transactions, and monitoring and displaying minting events are included.