initial commit

interface/src/components/FullScreenLoading.tsx

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+import React from 'react';
+import CircularProgress from '@material-ui/core/CircularProgress';
+import { Typography, Theme } from '@material-ui/core';
+import { makeStyles, createStyles } from '@material-ui/styles';
+
+const useStyles = makeStyles((theme: Theme) => createStyles({
+  fullScreenLoading: {
+    padding: theme.spacing(2),
+    display: "flex",
+    alignItems: "center",
+    justifyContent: "center",
+    height: "100vh",
+    flexDirection: "column"
+  },
+  progress: {
+    margin: theme.spacing(4),
+  }
+}));
+
+const FullScreenLoading = () => {
+  const classes = useStyles();
+  return (
+    <div className={classes.fullScreenLoading}>
+      <CircularProgress className={classes.progress} size={100} />
+      <Typography variant="h4">
+        Loading &hellip;
+      </Typography>
+    </div>
+  )
+}
+
+export default FullScreenLoading;