add estimateGas in abstract contract method

*add estimateGas in abstract contract method

Implement erc721 burnable

Implement erc721 burnable

Implement erc20 burnable

• Implement erc20 burnable

usi ABIManager to fetch ABI

usi ABIManager to fetch ABI

Add erc1155 implementation

• Add erc1155 implementation with test
• add erc20 burnable
• add erc20 snapshot

Create umd package

*Create umd package

remove client implementation

• remove client implementation
• add custom implementation for fetch in node

Fix error throwing in write transaction

• Fix error throwing in write transaction

fix issue with ethersclient not working with jsonrpc provider

fix issue with ethersclient not working with jsonrpc provider

add erc721 implementation

add erc721 implementation