Replace PoSAccountingView with PoSAccountingStorageRead for TransactionVerifierStorageRef

[azarovh]

PoSAccountingStorageRead should be a supertrait of TransactionVerifierStorageRef instead of PoSAccountingView.

See chainstate/tx-verifier/src/transaction_verifier/storage.rs

[TheQuantumPhysicist]

@azarovh Please add more information here with permalinks. Over time the relevant information will be lost.

[TheQuantumPhysicist]

@azarovh This is still pending, right?

[azarovh]

This is still pending, right?

@TheQuantumPhysicist yes

[azarovh]

Initial work done in origin/fix/issue_569 branch