[Feature Request] Implement `./tools/devtool fixstyle`

[seafoodfry]

Feature Request

While working on some documentation, I discovered that the pre-commit script relies on some python dependencies,

firecracker/pre-commit

Lines 32 to 39 in 45a1a1b

	if [ "$extension" = "py" ]; then
	# Apply formatters for this file
	black $i
	isort $i
	fi
	if [ "$extension" = "md" ]; then
	mdformat $i
	fi

I'm opening this ticket to discuss whether there'd be interest in creating a ./tools/devtool fixstyle to explicitly fix style errors and have this be used in the pre-commit.

Describe the desired solution

A possible solid solution that was offered in #4744

• create ./tools/devtool fixstyle to run mdformat, isort, black, etc.
• maybe have the pre-commit rely on ./tools/devtool fixstyle

Describe possible alternatives

Short term, I proposed documenting how to install mdformat in #4744 .
TL;DR create a python vitualenvironment and manually install the additional deps.

Additional context

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[zulinx86]

@seafoodfry I branched out the issue of KVM assumption as issue #4768. Thanks.

[roypat]

Hey @seafoodfry, I realized today that we actually already have this command! It's ./tools/devtool fmt :)