refactor(background): move background to own package, replace example import

packages/background/src/utils.tsx

@@ -0,0 +1,9 @@
+import React from 'react';
+
+export const createGridLinesPath = (size: number, strokeWidth: number, stroke: string): React.ReactElement => {
+  return <path stroke={stroke} strokeWidth={strokeWidth} d={`M${size / 2} 0 V${size} M0 ${size / 2} H${size}`} />;
+};
+
+export const createGridDotsPath = (size: number, fill: string): React.ReactElement => {
+  return <circle cx={size} cy={size} r={size} fill={fill} />;
+};