Itsacoyote quick fixes

[itsacoyote]

Resolves DEVRL-613, DEVRL-612, DEVRL-689

• https://linear.app/matterlabs/issue/DEVRL-689/add-search-to-community-code
• https://linear.app/matterlabs/issue/DEVRL-613/add-a-featured-flag-for-tutorials-in-cc
• https://linear.app/matterlabs/issue/DEVRL-612/card-misalignment

List of changes

• Fix some styling issues on landing page and tutorial page
• Add search functionality
• Add featured flag for tutorials to display on landing page

[github-actions[bot]]

Visit the preview URL for this PR (updated for commit 6a0fd90):

https://community-cookbook-staging--pr11-itsacoyote-quick-fix-avff9en8.web.app

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