P-chain - Multidimensional Static Fees

[abi87]

Why this should be merged

Splitting introduction of dynamic fees into 4 PRs:

• Introduce new dynamic fee calculator
• Update wallet to build transactions with dynamic fees
• Wire in new code into blocks/txs verification and building
• Update gas prices

How this works

• Wire in new verification and building facilities

How this was tested

Extra UTs and e2e tests. All new code is not wired in yet. Will be done in a sequent PR