@W-22210602: Adding Analytics report support in VS Code extension

[amit-kumar8-sf]

Summary

Polishes the CIP Analytics surface in the VS Code extension:

• Curated Reports tree (src/cip-analytics/types.ts) —
  replaced the generic folder icon with a distinct codicon per
  category (graph-line, package, account, search, tag,
  credit-card, globe, gear), humanized report slugs
  (customer-registration-trends → Customer Registration Trends), and moved the SDK report description into the
  right-hand description slot in place of the trailing emoji.
• Description color (.vscode/settings.json) — lightened
  workspace list.descriptionForeground /
  list.deemphasizedForeground to #9a9a9a so report subtext
  recedes from the title.
• Hero eyebrow accent (src/cip-analytics/cip-styles.css) —
  switched the B2C-DX ANALYTICS eyebrow on Query Builder and
  Entity Browser from --vscode-descriptionForeground to
  --cip-accent, picking up the theme's link/blue token.

Testing

• tsc --noEmit passes for packages/b2c-vs-extension.
• Reloaded the Extension Development Host and verified:
  • Curated Reports categories render with their new icons;
    report rows show humanized titles + descriptions.
  • Description text in the tree reads in the lighter grey.
  • Query Builder and Entity Browser headers show the eyebrow in
    the theme accent (verified in light + dark themes).

Dependencies

• No net-new third-party dependencies were added
• If net-new third-party dependencies were added,
  rationale/discussion is included and 3pl-approved is set by a
  maintainer

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• Tests pass (pnpm test)
• Code is formatted (pnpm run format)