Moved ContainerModel to Interfaces + replace all components to purecomponent (#12)

Reviewed-on: https://git.siklos-chaneru.duckdns.org/Siklos/svg-layout-designer-react/pulls/12

src/Components/FloatingButton/FloatingButton.tsx

@@ -0,0 +1,10 @@
+import * as React from 'react';
+
+interface IFloatingButtonProps {
+}
+
+const FloatingButton: React.FC<IFloatingButtonProps> = (props: IFloatingButtonProps) => {
+  return <></>;
+};
+
+export default FloatingButton;