Add comment-based help documentation to Add-ProgramsShortcuts function

[Copilot]

Proposed Changes

Added comment-based help block to Add-ProgramsShortcuts function in Sources/Winget-AutoUpdate/mods/_Mods-Functions.ps1 to match documentation standards used in other functions.

Documentation includes:

• .SYNOPSIS - Brief function description
• .DESCRIPTION - Detailed explanation of shortcut creation behavior, subdirectory support, and validation
• .PARAMETER - Descriptions for Shortcuts and ShortcutsTargets parameters with array ordering requirements
• .OUTPUTS - Return value specification (integer count)
• .EXAMPLE - Three usage examples covering single shortcut, subfolder creation, and multiple shortcuts

Related Issues

Addresses feedback from #1092: #1092 (comment)

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[github-actions]

❌MegaLinter analysis: Error

Descriptor	Linter	Files	Fixed	Errors	Warnings	Elapsed time
✅ COPYPASTE	jscpd	yes		no	no	2.69s
⚠️ MARKDOWN	markdownlint	2	1	11	0	1.18s
✅ MARKDOWN	markdown-table-formatter	2	1	0	0	0.27s
✅ POWERSHELL	powershell	34		0	0	45.27s
✅ POWERSHELL	powershell_formatter	34		0	0	29.2s
⚠️ REPOSITORY	checkov	yes		3	no	16.26s
⚠️ REPOSITORY	devskim	yes		1	8	1.62s
✅ REPOSITORY	dustilock	yes		no	no	0.01s
❌ REPOSITORY	gitleaks	yes		2	no	1.07s
✅ REPOSITORY	git_diff	yes		no	no	0.01s
✅ REPOSITORY	grype	yes		no	no	31.14s
✅ REPOSITORY	kics	yes		no	no	5.47s
✅ REPOSITORY	secretlint	yes		no	no	0.72s
✅ REPOSITORY	syft	yes		no	no	1.14s
✅ REPOSITORY	trivy	yes		no	no	8.7s
✅ REPOSITORY	trivy-sbom	yes		no	no	0.13s
✅ REPOSITORY	trufflehog	yes		no	no	2.52s
⚠️ SPELL	cspell	39		101	0	7.63s
✅ SPELL	lychee	3		0	0	2.1s
✅ XML	xmllint	1	0	0	0	0.27s

Detailed Issues

❌ REPOSITORY / gitleaks - 2 errors

Linter output file not found

⚠️ REPOSITORY / checkov - 3 errors

Linter output file not found

⚠️ SPELL / cspell - 101 errors

Linter output file not found

⚠️ REPOSITORY / devskim - 1 error

Linter output file not found

⚠️ MARKDOWN / markdownlint - 11 errors

Linter output file not found

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