stdtx: can not make tranfer transaction

[linfeng-crypto]

Transfer some cion from A to B:

the TypeName is not support the cosmos-sdk/MsgSend, because - is invalid in TypeName

What's the Value of amount in the schema which type is Vec<Coin>, if it is Value::Bytes<Vec<u8>>, how to encode the Vec<Coin> to <Vec<u8>>?

[tony-iqlusion]

Note: we plan on retiring the stdtx crate fairly soon, in favor of the cosmos-tx crate:

https://github.com/cosmos/cosmos-rust/tree/main/cosmos-tx

...however that crate will not support Amino-based transactions that stdtx does presently, only ones based on Protocol Buffers.

I can add support for a - in the type identifiers, but in terms of adding support for additional types in the schema, that's probably not going to happen as we intend to completely migrate away from the Amino encoding.