feat: PopupCourseBlock Component

[DhruvArora-03]

New component for the course blocks in the extension popup

takes in

PopupCourseBlockProps {
    className?: string;
    course: Course;
    primaryColor: string; // tailwind class name for background (ex. "bg-emerald-300")
    secondaryColor: string; // tailwind class name for drag handle and icon background (ex. "bg-emerald-500")
    whiteText?: boolean; // control if font is white or black
}

actual:

figma:

[Razboy20]