Uniformize folder structure (#693)

* Uniformize folder structure

* Fix icons

* Fix icons

* Fix tests

* Fix tests

front/src/modules/ui/link/components/PrimaryLink.tsx

@@ -0,0 +1,29 @@
+import React from 'react';
+import { Link as ReactLink } from 'react-router-dom';
+import styled from '@emotion/styled';
+
+type OwnProps = {
+  children: React.ReactNode;
+  href: string;
+  onClick?: () => void;
+  fullWidth?: boolean;
+};
+
+const StyledClickable = styled.div`
+  display: flex;
+  a {
+    color: ${({ theme }) => theme.font.color.tertiary};
+    font-size: ${({ theme }) => theme.font.size.sm};
+    text-decoration: underline;
+  }
+`;
+
+export function PrimaryLink({ href, children, onClick }: OwnProps) {
+  return (
+    <StyledClickable>
+      <ReactLink onClick={onClick} to={href}>
+        {children}
+      </ReactLink>
+    </StyledClickable>
+  );
+}