[feature] browser nav back button

[kevkevinpal]

Task

Implement React Router and make search work through router parameters.

Full e2e flow:

Navigation:

• Implement React Router for navigation.
• Make search functionality work using URL parameters.
• Ensure browser back arrow navigates correctly:
  • User searches for something.
  • User hits the browser back arrow.
  • User is taken back to the home page

Sharing URL:

• Searching for "fed rate cuts" should generate a URL like https://www.secondbrain.sphinx.chat/search?q=fed+rate+cuts
• Navigating directly to the URL should trigger search endpoint (for user to pay).

Acceptance Criteria:

• [ ] Implement React Router for app navigation.
• [ ] Create a search route that accepts query parameters.
• [ ] Ensure that searching updates the URL with the query parameters.
• [ ] Implement back navigation to return to the home page when the browser back arrow is pressed.
• [ ] Verify that sharing a search URL works correctly by asking for payment.
• [ ] Tests for each acceptance criteria

[AhsanFarooqDev]

@kevkevinpal @tomsmith8 assign?

[MirzaHanan]

@tomsmith8 assign me?

[Shoaibdev7]

@tomsmith8 assign me?

🙏🙏🙏🙏🙏

[AhsanFarooqDev]

@tomsmith8 assign?