feat: updated pricing and billing

[rohan-chaturvedi]

🔍 Overview

Misc updates for the new pricing model

💡 Proposed Changes

• Update the checkout screen to show price calculation based on the new pricing model
• Removed the feature list from the settings screen
• Updated the active subscription display to show the amount for the next payment

🖼️ Screenshots or Demo

Updated checkout preview

Next payment amount

📝 Release Notes

Misc updates to billing management

🎯 Reviewer Focus

• Verify that the checkout preview calculations are correct, and match the pricing page
• Verify that the $ amount shown for the next payment is correct

💚 Did You...

• Ensure linting passes (code style checks)?
  - [ ] Update dependencies and lockfiles (if required)
• Regenerate graphql schema and types (if required)
• Verify the app builds locally?
• Manually test the changes on different browsers/devices?