Factor out a type from access lists

[SamWilsn]

For example:

execution-specs/src/ethereum/cancun/transactions.py

Line 62 in 0f116b5

access_list: Tuple[Tuple[Address, Tuple[Bytes32, ...]], ...]

Because it's repeated in several different transaction types, the Tuple[Address, Tuple[Bytes32, ...]] portion should be promoted to its own type. Something like:

@slotted_freezable
@dataclass
class Access:
    account: Address
    slots: Tuple[Bytes32, ...]

[richardgreg]

And this, too?

[SamWilsn]

Help is always appreciated, but this one might be a bit harder than I originally estimated because of the RLP encoding. Feel free to take a stab at it (and make a separate PR for Prague) if you want!

[Redidacove]

@SamWilsn I am curious to know how can I contribute to a specific fork
Like forks/prague when I fork the repo and clone it to my VS Code and start coding how can I get code of a specific branch I know it maybe a beginner question but can you please clear my doubt.

[SamWilsn]

Most of the forks are just in the master branch (eg. src/ethereum/constantinople), but the "next" fork is in forks/prague.