Enable extended_asset to be encoded from array

[conr2d]

Change Description

eosio::extended_asset uses generated fc::from_variant() to encode, so it should be passed by object.

$ cleos push action xxx xxx '[{"quantity": "1.0000 EOS", "contract": "eosio.token"}]' -p eosio

However, non-built_in type like eosio::extended_symbol uses _variant_to_binary of abi_serializer and encoding from array is supported.

$ cleos push action xxx xxx '[["4,EOS", "eosio.token"]]' -p eosio

This PR adds overloaded fc::from_variant for extended_asset to support encoding from both object and array.

$ cleos push action xxx xxx '[["1.0000 EOS", "eosio.token"]]' -p eosio
$ cleos push action xxx xxx '[{"quantity": "1.0000 EOS", "contract": "eosio.token"}]' -p eosio

Consensus Changes

• Consensus Changes

API Changes

• API Changes

Documentation Additions

• Documentation Additions