Artur64

Implement serializations for Proof of Fraud

2

Serializations should be implemented after the PoF issue #739 itself is implemented: https://github.com/aeternity/protocol/blob/epoch-v0.25.0/serializations.md#proof-of-fraud. This issue is a part of #732

Adjust our constants to the [latest Governance constants](https://github.com/aeternity/epoch/blob/v0.24.0/apps/aecore/src/aec_governance.erl#L38)

More info can be found at [this link](https://github.com/aeternity/epoch/blame/v0.24.0/apps/aecore/src/aec_tx_pool.erl#L119)

Handle RPC-call results and wrap them in more "readable" and easy-to-work-with structures.