Summary: Mosaic adds Integrations to product menu

Why It Matters: Mosaic now lists Integrations as a core product feature.

What Changed:

• "Integrations" was added to the "Product" menu.
• "Use Cases" was moved from the main navigation to the "Resources" menu.
• "Integrations" was removed from the "Resources" menu.
• "Customer Stories" was moved from the "Resources" menu to the main navigation.