Add call utxo in UTXO Ledger

[Neylix]

Description

Add the contract call UTXO on UTXO Ledger.

Type of change

• New feature (non-breaking change which adds functionality)

How Has This Been Tested?

Unit test

Created a contract allowing to send a call to the contract but not creating a transaction to see the call in the genesis inputs on the explorer (using ?debug flag)

@version 1
condition triggered_by: transaction, on: vote(), as: []
actions triggered_by: transaction, on: vote() do
  # uco_movements are not filled during contract call validation
  # but they exists during contract execution
  if Map.size(transaction.uco_movements) == 0 do
    Contract.set_content("ok")
  else
    # raise an error
    1/0
  end
end

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules