feat: add GDPR cookie consent banner for Google Analytics

[kaminimangal]

Summary

In this pull request, the following changes are made:
Added a cookie consent toggle in status page settings.
When enabled with google analytics, it shows a banner asking whether it has to accept or decline cookies.
Used localStorage to remember the user's choice

#4337 (comment)

• Relates to [GDPR] Add cookies consent when Google Analytics is Enabled #4337

Please follow this checklist to avoid unnecessary back and forth (click to expand)

• ⚠️ If there are Breaking change (a fix or feature that alters existing functionality in a way that could cause issues) I have called them out
• 🧠 I have disclosed any use of LLMs/AI in this contribution and reviewed all generated content.
  I understand that I am responsible for and able to explain every line of code I submit.
  I used Claude AI to understand the codebase and debug but I wrote and tested the most of code by myself.
• 🔍 Any UI changes adhere to visual style of this project.
• 🛠️ I have self-reviewed and self-tested my code to ensure it works as expected.
• 📝 I have commented my code, especially in hard-to-understand areas (e.g., using JSDoc for methods).
• 🤖 I added or updated automated tests where appropriate.
• 📄 Documentation updates are included (if applicable).
• 🧰 Dependency updates are listed and explained.
• ⚠️ CI passes and is green.

Screenshots for Visual Changes