monorepo: type improvements

[gabrocheleau]

This PR brings some type improvements to the repository, notably removing a lot of typecasting.

[codecov]

Codecov Report

Attention: Patch coverage is 85.29412% with 5 lines in your changes missing coverage. Please review.

Project coverage is 79.63%. Comparing base (8512301) to head (0456966).
Report is 1 commits behind head on master.

Additional details and impacted files

Flag	Coverage Δ
block	83.29% <ø> (ø)
blockchain	89.33% <0.00%> (-0.17%)	⬇️
client	68.08% <100.00%> (?)
common	98.49% <ø> (ø)
devp2p	86.73% <ø> (ø)
evm	72.98% <100.00%> (+0.04%)	⬆️
genesis	99.98% <ø> (ø)
mpt	89.76% <100.00%> (ø)
rlp	91.43% <ø> (ø)
statemanager	69.16% <ø> (ø)
tx	90.58% <100.00%> (ø)
util	81.96% <ø> (ø)
vm	57.20% <100.00%> (ø)
wallet	88.55% <ø> (ø)

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[holgerd77]

Updated the branch here.

[holgerd77]

I would cautiously assume we can bring the current set of changes in here without any side effects, all seem very much to stand on their own. Will approve and merge pro-actively, hope that's ok (let me know if it was not).

[gabrocheleau]

I would cautiously assume we can bring the current set of changes in here without any side effects, all seem very much to stand on their own. Will approve and merge pro-actively, hope that's ok (let me know if it was not).

Sure! Will resume the work in a separate PR.