Feat: Add create button

Author: ntcho

frontend/components/organisms/Header/Header.js

@@ -1,10 +1,12 @@
-import { mdiBell } from '@mdi/js';
+import { mdiBell, mdiPlus } from '@mdi/js';
 import Icon from '@mdi/react';
 import { IconButton } from '@mui/material';
+import Button from '@mui/material/Button';
 import PropTypes from 'prop-types';
 import React, { useRef, useState } from 'react';
 import { useHistory } from 'react-router-dom';
 import SearchIcon from '_assets/svgs/search_icon.svg';
+import LinkComponent from '_atoms/LinkComponent';
 
 export default function Header() {
   const history = useHistory();
@@ -42,6 +44,20 @@ export default function Header() {
       <IconButton className="header-notification-button">
         <Icon size={1} path={mdiBell} />
       </IconButton>
+      <Button
+        disableElevation
+        variant="contained"
+        color="primary"
+        component={LinkComponent}
+        to="/item/create"
+      >
+        <Icon
+          path={mdiPlus}
+          size={0.9}
+          style={{ marginLeft: "-6px", marginRight: "4px" }}
+        />
+        새로 만들기
+      </Button>
     </div>
   );
 }