added login page with github authentication option

packages/app/src/components/Root/Root.tsx

@@ -18,6 +18,7 @@ import React, { FC, useContext } from 'react';
 import PropTypes from 'prop-types';
 import { Link, makeStyles, Typography } from '@material-ui/core';
 import HomeIcon from '@material-ui/icons/Home';
+import AccountCircle from '@material-ui/icons/AccountCircle';
 import {
   Sidebar,
   SidebarPage,
@@ -77,6 +78,7 @@ const Root: FC<{}> = ({ children }) => (
       <SidebarSpacer />
       <SidebarDivider />
       <SidebarItem icon={HomeIcon} to="/" text="Home" />
+      <SidebarItem icon={AccountCircle} to="/login" text="Login" />
       <SidebarDivider />
       <SidebarSpace />
     </Sidebar>