Upgrade frontend dependencies

[garg3133]

Describe the bug

Right now, on doing npm i, we get the following deprecation warnings:

> npm i
             
npm WARN deprecated @material-ui/styles@4.11.5: Material UI v4 doesn't receive active development since September 2021. See the guide https://mui.com/material-ui/migration/migration-v4/ to upgrade to v5.
npm WARN deprecated @material-ui/pickers@3.3.11: This package no longer supported. It has been relaced by @mui/x-date-pickers
npm WARN deprecated @material-ui/lab@4.0.0-alpha.61: Material UI v4 doesn't receive active development since September 2021. See the guide https://mui.com/material-ui/migration/migration-v4/ to upgrade to v5.
npm WARN deprecated @material-ui/core@4.12.4: Material UI v4 doesn't receive active development since September 2021. See the guide https://mui.com/material-ui/migration/migration-v4/ to upgrade to v5.

So, we should consider upgrading material-ui, as well as other dependencies to the latest version. Please refer to #73 for more details.

TODO:

• Upgrade material-ui to v5 (which has some breaking changes).
• Upgrade react-router-dom to v6, which again has some breaking changes.
• Upgrade React to v8, along with other dependencies as done in fix frontend dependencies issues #73.