feat: enabled "profile" button on appbar menu

frontend/src/components/BackdropLoading/index.js

@@ -0,0 +1,23 @@
+import React from "react";
+
+import Backdrop from "@material-ui/core/Backdrop";
+import CircularProgress from "@material-ui/core/CircularProgress";
+import { makeStyles } from "@material-ui/core/styles";
+
+const useStyles = makeStyles(theme => ({
+	backdrop: {
+		zIndex: theme.zIndex.drawer + 1,
+		color: "#fff",
+	},
+}));
+
+const BackdropLoading = () => {
+	const classes = useStyles();
+	return (
+		<Backdrop className={classes.backdrop} open={true}>
+			<CircularProgress color="inherit" />
+		</Backdrop>
+	);
+};
+
+export default BackdropLoading;