Add react-simple-maps, better country page with FR, JP and CH configs

app/components/LinearGradient.jsx

@@ -0,0 +1,28 @@
+import React from 'react';
+import PropTypes from 'prop-types';
+import { Box, Flex, Spacer } from '@chakra-ui/react';
+
+const LinearGradient = ({ data }) => {
+  return (
+    <div>
+      <Flex w="50%" m="auto">
+        <span>{data.min}</span>
+        <Spacer />
+        <span>{data.max}</span>
+      </Flex>
+      <Box
+        w="50%"
+        m="auto"
+        bgImage={`linear-gradient(to right, ${data.fromColor} , ${data.toColor})`}
+        height="20px"
+        mt="8px"
+      />
+    </div>
+  );
+};
+
+LinearGradient.propTypes = {
+  data: PropTypes.object.isRequired,
+};
+
+export default LinearGradient;