perf: speed up local scripts

[sripwoud]

• Execute scripts concurrently where appropriated: build, test, lint, format scripts
  • either with yarn workspaces foreach --parallel option
  • or with concurrently
    in which case I still group the log outputs (to avoid having them interlaced) with the -g option

Ex of time execution reduction

	Before	After
yarn build:libraries	37.869s	24.732s
yarn test	22.553s	12.358s

[openzeppelin-code]

perf: speed up local scripts

Generated at commit: 2a98b0db3223722b66f33016cbee009f55e88cfe

🚨 Report Summary

	Severity Level	Results
Contracts	Critical High Medium Low Note Total	0 0 0 4 15 19
Dependencies	Critical High Medium Low Note Total	0 0 0 0 0 0

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For more details view the full report in OpenZeppelin Code Inspector

[cedoor]

LGTM! Just left a comment.

[cedoor]

Ready to be merged I think @sripwoud! Thanks :)