Refactor the domain and monitor detail pages to use a new modular
component architecture. This includes:
- Implementing `domain-info-sections.tsx` and `monitor-info-sections.tsx`
to provide structured, card-based information layouts.
- Enhancing domain details with new sections for DNS, SSL, SEO, and
hosting information.
- Improving monitor details with enhanced uptime visualizations and
response time statistics.
- Updating the PageSpeed check API to support an optional API key from
environment variables.
- Cleaning up UI components and improving code formatting in the
monitors table.
- Updating localization files to support new UI strings.