chore: add engines property to all package.json files

[faustbrian]

Adds the engines property to each package.json file to make sure the minimum version is met when installing.

[codecov]

Codecov Report

Merging #2164 (633f3b9) into master (f9a0471) will decrease coverage by 9.82%.
The diff coverage is n/a.

Flag	Coverage Δ
blockchain	88.82% <ø> (?)
common	98.09% <ø> (?)
devp2p	92.25% <ø> (-0.06%)	⬇️
evm	62.96% <ø> (?)
rlp	∅ <ø> (?)
statemanager	88.66% <ø> (?)
trie	89.27% <ø> (?)
tx	97.98% <ø> (?)
util	93.14% <ø> (?)
vm	86.17% <ø> (?)

Flags with carried forward coverage won't be shown. Click here to find out more.

[gabrocheleau]

Looks good!
Would be best however is someone else could confirm that we're fine with only supporting Node v16 and greater, ast there might be retro-compatibility considerations that I'm unaware of. @holgerd77 @acolytec3 @jochem-brouwer

[faustbrian]

Wasn't sure what to use as minimum version because there was 10, 12 and 14 but 16 is the current LTS so went with that.

[acolytec3]

We should support v14 and beyond for now. We try to stick with supporting all NodeJS LTS versions not currently at EOL (so currently 14 and above) https://nodejs.org/en/about/releases/

[faustbrian]

@acolytec3 changed to 14

[acolytec3]

Lgtm

[holgerd77]

Yes, think 14 is a good choice, we don't want to be too aggressive here.