Added curated related recipes to recipe pages

I introduced a new feature that lets each recipe display a curated list of related recipes. Instead of relying solely on tag overlap, we now use a dedicated database column to store related recipe slugs, allowing for more meaningful and handpicked recommendations.

Database migration and updates for related recipes

To support the related recipes feature, I added a new column to the recipes table and populated it with related recipe slugs for all existing recipes. This makes it easier to manage and update related content directly in the database.

Footer update with Tumblr link

Added a Tumblr link to the footer to expand PantryAI's social presence and provide another channel for users to discover our content.

Other improvements

• Improved the RelatedRecipes component to fetch related recipes by their slugs and display detailed info like prep time, calories, and dietary tags.
• Updated recipe page to pass related recipe slugs to the related recipes component for better context.