feat: Empty state component

This adds an empty state component that borrows from the current codebase for styling. Following the current guidelines in the design system.

There's a bit of logic inside this component that allows us to follow the design system rules without any user input.

1. It will only render a secondary button if a primary button is also present
2. If the description breaks on to two lines, it becomes left-aligned
3. If the title breaks on to two lines, it becomes left aligned and also left aligns the description, regardless of its length.

Closes #64 (closed)