feat: Implement search functionality for chapters and lessons

[vtushar06]

What kind of change does this PR introduce?

Feature - Added search functionality to the tour outline

Issue Number:

• Closes Feature: Add a search feature #164

Screenshots/videos:

jsonschematour.mp4

If relevant, did you update the documentation?

N/A - No documentation updates needed for this UI feature

Summary

This PR implements a search feature in the outline drawer that allows users to quickly find chapters and lessons by title. The search:

• Filters chapters and lessons in real-time as users type
• Displays only matching results (case-insensitive)
• Shows a "no results" message when no matches are found
• Maintains correct chapter numbering and completion status

Implementation:

• Created app/utils/hooks.ts with useSearch custom hook for search logic
• Updated OutlineDrawer component to include search input and filtered results
• Added comprehensive comments explaining the code per maintainer feedback

Does this PR introduce a breaking change?

No