feat: changed infra::Optional to use std::optional as its base type

[daantimmer]

This marks the beginning of deprecating infra::Optional in favour of std::optional. With this change usages of infra::Optional can be slowly replaced by std::optional.

[github-actions]

Dependency Review

✅ No vulnerabilities or license issues or OpenSSF Scorecard issues found.

OpenSSF Scorecard

Package	Version	Score	Details

Scanned Manifest Files

[github-actions]

🦙 MegaLinter status: ⚠️ WARNING

Descriptor	Linter	Files	Fixed	Errors	Elapsed time
✅ ACTION	actionlint	12		0	0.05s
✅ CPP	clang-format	958	2	0	6.71s
✅ DOCKERFILE	hadolint	2		0	0.11s
✅ JSON	jsonlint	9		0	0.25s
✅ JSON	prettier	9	0	0	1.02s
⚠️ MARKDOWN	markdownlint	6	0	4	1.58s
⚠️ MARKDOWN	markdown-link-check	6		1	61.5s
✅ MARKDOWN	markdown-table-formatter	6	0	0	0.4s
✅ REPOSITORY	checkov	yes		no	18.19s
✅ REPOSITORY	git_diff	yes		no	0.08s
✅ REPOSITORY	grype	yes		no	14.67s
✅ REPOSITORY	secretlint	yes		no	7.73s
✅ REPOSITORY	trivy	yes		no	4.78s
✅ REPOSITORY	trivy-sbom	yes		no	3.11s
✅ REPOSITORY	trufflehog	yes		no	2.87s
⚠️ SPELL	lychee	137		2	2.03s
⚠️ YAML	prettier	22	0	1	1.14s
✅ YAML	v8r	22		0	95.85s
✅ YAML	yamllint	22		0	0.42s

See detailed report in MegaLinter reports

MegaLinter is graciously provided by

[sonarcloud]

Quality Gate failed

Failed conditions
75.6% Coverage on New Code (required ≥ 80%)
E Reliability Rating on New Code (required ≥ A)

See analysis details on SonarCloud

Catch issues before they fail your Quality Gate with our IDE extension SonarLint