🎨 Palette: Add accessibility info to status bar item

[raccioly]

💡 What: Added accessibilityInformation to the VS Code extension's status bar item to provide clear spoken text instead of reading raw markdown icons.
🎯 Why: Status bar items with icons and shorthand text (like $(shield) CDD: ?) are not read clearly by screen readers. Adding explicit accessibility labels solves this.
📸 Before/After: Not applicable (invisible a11y change).
♿ Accessibility: Provides proper ARIA-like context (label and role) to the status bar item so visually impaired developers can understand the current CDD score and state.

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PR created automatically by Jules for task 2260082455269697978 started by @raccioly

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