feat: migrate ui to mantine

[evan-buss]

I found evergreen-ui was lacking in many areas:

• few built in components
• general lack of updates / popularity decline
• dependencies on libraries that are outdated and show npm audit issues
• not responsive
• no dark mode
• hard to customize styling

Rewrote UI components with mantine. Which resolves most of these issues:

• actively maintained / frequent updates
• many components (including all currently required components)
• uses standard @emotion/react styled components
• out of the box dark mode
• out of the box responsive styling
• useful hooks built in (can drop react-use)

This update also includes a custom table created with @tanstack/table, which allows a lot of customization and adapts to any design system

• advanced filtering
• resizable columns