add user notifications (#148)

* added notification settings

* notifications: added list to profile

* notifications: changed appearance for comment notifications

src/components/common/InlineUsername/index.tsx

@@ -0,0 +1,20 @@
+import React, { FC } from 'react';
+
+import { useColorFromString } from '~/hooks/color/useColorFromString';
+
+import styles from './styles.module.scss';
+
+interface InlineUsernameProps {
+  children: string;
+}
+
+const InlineUsername: FC<InlineUsernameProps> = ({ children }) => {
+  const backgroundColor = useColorFromString(children);
+  return (
+    <span style={{ backgroundColor }} className={styles.username}>
+      ~{children}
+    </span>
+  );
+};
+
+export { InlineUsername };