Update efficiency of format command when working with multiple projects

[jaudiger]

Based on top of #337

This PR is very similar to #255, it adapts the format command this time to be more efficient when working with multiple projects.

[kylewlacy]

LGTM

I tested locally with this command in brioche-packages:

echo ./packages/* | xargs printf -- '-p %s\n' | time xargs brioche fmt

...and it didn't seem to speed up or slow down things noticeably (~7 seconds before and after this change). But the end result has a better output in my opinion, since it now shows all the files at once instead of separating them by project, which I personally prefer!

[jaudiger]

@kylewlacy I just pushed a rebase on top of main branch to resolve merge conflicts due to similar commits between this PR and main.

and it didn't seem to speed up or slow down things noticeably (~7 seconds before and after this change)

I wanted to also get some figures from the CI on brioche-packages to compare. As for now it takes around 15s to check the formatting of files of each package, one by one.

[kylewlacy]

LGTM

[jaudiger]

I wanted to also get some figures from the CI on brioche-packages to compare. As for now it takes around 15s to check the formatting of files of each package, one by one.

Before:

After:

Same time, just better output 😁