Support v1 tokens in randomised tests

[azarovh]

• Moved the code that creates random transaction to a separate mod
• Dropped v0 tokens generation because it's mutually exclusive according to out netupgrade
• Added v1 tokens support: issuance, minting, unminting, locking supply.
• RandomTxMaker now also supports creation transactions with multiple inputs (both utxo and accounts)

P.S. the test that actually runs the code is in chainstate/test-suite/src/tests/tx_verification_simulation.rs