Flow git diff: New parameters --commit-before and --commit-after

[nvuillam]

Fixes #1001

[github-actions]

🦙 MegaLinter status: ⚠️ WARNING

Descriptor	Linter	Files	Fixed	Errors	Elapsed time
✅ ACTION	actionlint	9		0	0.1s
⚠️ BASH	bash-exec	3		3	0.02s
✅ BASH	shfmt	3	0	0	0.49s
✅ COPYPASTE	jscpd	yes		no	22.85s
✅ DOCKERFILE	hadolint	1		0	0.14s
✅ JSON	npm-package-json-lint	yes		no	0.51s
⚠️ JSON	prettier	26	0	1	0.91s
✅ JSON	v8r	26		0	35.37s
⚠️ MARKDOWN	markdownlint	293	0	338	9.56s
✅ MARKDOWN	markdown-table-formatter	293	0	0	1.78s
✅ REPOSITORY	checkov	yes		no	21.3s
⚠️ REPOSITORY	gitleaks	yes		3	45.8s
⚠️ REPOSITORY	grype	yes		6	9.49s
✅ REPOSITORY	trivy	yes		no	5.89s
✅ REPOSITORY	trivy-sbom	yes		no	0.35s
✅ REPOSITORY	trufflehog	yes		no	6.5s
✅ SPELL	cspell	547		0	12.06s
⚠️ SPELL	lychee	336		15	3.28s
✅ TYPESCRIPT	eslint	192	0	0	11.07s
⚠️ TYPESCRIPT	prettier	192	0	1	0.8s
✅ XML	xmllint	4	0	0	0.52s
⚠️ YAML	prettier	15	0	1	0.84s
✅ YAML	v8r	15		0	14.96s
✅ YAML	yamllint	15		0	0.7s

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