[0.40.0] Update SDK v0.39.0 -> v0.40.0

[joel-u410]

Including the following changes:

• Update for 0.40.0 compatibility
• Implement serialization for Transfer
• Rename transparent_transfer -> transfer

This is roughly similar to #69 but with a couple notable differences:

• Serialization is implemented for Transfer based on @mateuszjasiuk's implementation but slightly changed (see below)
• The transparent_transfer enum value is renamed to transfer in the schema

Serialization example for Transfer (formatted for readability):

{
  "sources": [
    {
      "amount": "100.000000",
      "token": "tnam1q87wtaqqtlwkw927gaff34hgda36huk0kgry692a",
      "owner": "tnam1qrcqrpj8r8lv6632wcwv9j0r6pp4n3xsug9hkxzx"
    }
  ],
  "targets": [
    {
      "amount": "100.000000",
      "token": "tnam1q87wtaqqtlwkw927gaff34hgda36huk0kgry692a",
      "owner": "tnam1qq0t2s4dmqvxqwl25fm3eyckgekgftggfg9nfe5h"
    }
  ],
  "shielded_section_hash": null
}

I changed the BTreeMap<Account, DenominatedAmount> to a list of { amount, token, owner } objects instead of a map with the account as key -- in my opinion, it will be easier for consumers to parse the data that way. Thoughts?

[mateuszjasiuk]

@joel-u410 Thanks! Tested and it looks great. I would not rename TransparentTransfer to Transfer as it's closer to what we have in the namada sdk atm

As a side note, if you plan to contribute in the future, you do not have to care about breaking changes to migrations(or any other breaking change) up the the point of first release.

@sirouk Thanks again for your contribution. I will close #69 in favor of this one, as it's almost done.

[joel-u410]

I would not rename TransparentTransfer to Transfer as it's closer to what we have in the namada sdk atm

Ok, no problem, I can rename it back. Should I also revert the enum change in the schema migrations?

[joel-u410]

@mateuszjasiuk see the latest commit -- is this what you had in mind?

[mateuszjasiuk]

Yup! This is great. Thank you :)

[mateuszjasiuk]

Ah run just clippy and fix warnings

[joel-u410]

Ah run just clippy and fix warnings

Ah yes, forgot about clippy -- done!

[joel-u410]

And just rebased to latest main