Docs: Added MegaLinter badge for main branch (closes #60)

[andrewvaughan]

No description provided.

[github-actions]

🦙 MegaLinter status: ✅ SUCCESS

Descriptor	Linter	Files	Fixed	Errors	Elapsed time
✅ COPYPASTE	jscpd	yes		no	2.66s
✅ EDITORCONFIG	editorconfig-checker	1		0	0.03s
✅ MARKDOWN	markdownlint	1	0	0	1.2s
✅ MARKDOWN	markdown-link-check	1		0	5.66s
✅ MARKDOWN	markdown-table-formatter	1	0	0	0.41s
✅ REPOSITORY	checkov	yes		no	28.02s
✅ REPOSITORY	devskim	yes		no	1.46s
✅ REPOSITORY	dustilock	yes		no	0.03s
✅ REPOSITORY	gitleaks	yes		no	0.28s
✅ REPOSITORY	git_diff	yes		no	0.01s
✅ REPOSITORY	grype	yes		no	13.53s
✅ REPOSITORY	kics	yes		no	15.44s
✅ REPOSITORY	secretlint	yes		no	0.99s
✅ REPOSITORY	syft	yes		no	0.32s
✅ REPOSITORY	trivy	yes		no	3.91s
✅ REPOSITORY	trivy-sbom	yes		no	3.36s
✅ REPOSITORY	trufflehog	yes		no	3.6s
✅ SPELL	cspell	2		0	2.98s
✅ SPELL	vale	1		0	0.75s

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

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