docs: added section on running without database persistence

🦙 MegaLinter status: ✅ SUCCESS

Descriptor	Linter	Files	Errors	Elapsed time
✅ ACTION	actionlint	4	0	0.02s
✅ DOCKERFILE	hadolint	2	0	0.09s
✅ EDITORCONFIG	editorconfig-checker	67	0	0.31s
✅ GROOVY	npm-groovy-lint	2	0	11.95s
✅ JAVA	checkstyle	18	0	4.46s
✅ JSON	eslint-plugin-jsonc	5	0	2.41s
✅ JSON	jsonlint	5	0	0.17s
✅ JSON	prettier	5	0	2.15s
✅ JSON	v8r	5	0	3.57s
✅ MARKDOWN	markdownlint	2	0	0.54s
✅ PYTHON	bandit	1	0	1.1s
✅ PYTHON	black	1	0	1.15s
✅ PYTHON	flake8	1	0	1.6s
✅ PYTHON	isort	1	0	0.38s
✅ PYTHON	mypy	1	0	7.32s
✅ PYTHON	ruff	1	0	0.02s
✅ REPOSITORY	checkov	yes	no	15.07s
✅ REPOSITORY	gitleaks	yes	no	0.81s
✅ REPOSITORY	git_diff	yes	no	0.03s
✅ REPOSITORY	grype	yes	no	13.44s
✅ REPOSITORY	kics	yes	no	6.89s
✅ REPOSITORY	secretlint	yes	no	1.06s
✅ REPOSITORY	syft	yes	no	0.25s
✅ REPOSITORY	trivy	yes	no	7.48s
✅ REPOSITORY	trivy-sbom	yes	no	3.7s
✅ REPOSITORY	trufflehog	yes	no	3.46s
✅ SQL	sql-lint	1	0	0.39s
✅ XML	xmllint	1	0	0.01s
✅ YAML	prettier	17	0	1.93s
✅ YAML	yamllint	17	0	0.59s

See detailed report in MegaLinter reports

You could have same capabilities but better runtime performances if you request a new MegaLinter flavor.

_MegaLinter is graciously provided by _