CHANGED: style and components directories, removed redundant imports from styles

ADDED: container and card component, card-subcomponents WIP

src/primitive-components/card/card-header.tsx

@@ -0,0 +1,7 @@
+import React from 'react';
+
+export function CardHeader(props) {
+    return (
+        <div></div>
+    );
+}