ci(lint): create and update linter configuration files

[parkerbxyz]

This pull request primarily involves changes to improve the project's markdown linting and link checking. The .markdownlint.yml file was updated to only check sibling headings for duplicate content. The .mega-linter.yml file was modified to disable the MARKDOWN_MARKDOWN_LINK_CHECK in favor of lychee. Additionally, a new lychee.toml configuration file was added to enable link caching, require HTTPS for links, and exclude certain types of links.

[github-actions]

🦙 MegaLinter status: ✅ SUCCESS

Descriptor	Linter	Files	Fixed	Errors	Elapsed time
✅ COPYPASTE	jscpd	yes		no	1.67s
✅ JSON	jsonlint	1		0	0.23s
✅ JSON	prettier	1		0	0.43s
✅ JSON	v8r	1		0	1.85s
✅ REPOSITORY	checkov	yes		no	12.77s
✅ REPOSITORY	gitleaks	yes		no	0.28s
✅ REPOSITORY	git_diff	yes		no	0.0s
✅ REPOSITORY	grype	yes		no	12.7s
✅ REPOSITORY	secretlint	yes		no	1.1s
✅ REPOSITORY	trivy	yes		no	5.74s
✅ REPOSITORY	trivy-sbom	yes		no	2.99s
✅ REPOSITORY	trufflehog	yes		no	3.79s
✅ SPELL	cspell	4		0	3.04s
✅ SPELL	lychee	3		0	0.25s
✅ YAML	prettier	2		0	0.6s
✅ YAML	v8r	2		0	4.79s
✅ YAML	yamllint	2		0	0.26s

See detailed report in MegaLinter reports
Set VALIDATE_ALL_CODEBASE: true in mega-linter.yml to validate all sources, not only the diff

MegaLinter is graciously provided by