added footer

src/Footer.tsx

@@ -0,0 +1,35 @@
+import * as React from 'react';
+import Container from '@mui/material/Container';
+import Link from '@mui/material/Link';
+import Typography from '@mui/material/Typography';
+
+function Copyright() {
+  return (
+    <Typography variant="body2" sx={{ color: 'text.secondary' }}>
+      <Link color="text.secondary" href="https://www.aetoskia.com/">
+        {'Copyright © Aetoskia Internal Infrastructure — All rights reserved.'}
+      </Link>
+      &nbsp;
+      {new Date().getFullYear()}
+    </Typography>
+  );
+}
+
+export default function Footer() {
+  return (
+    <React.Fragment>
+      <Container
+        sx={{
+          display: 'flex',
+          flexDirection: 'column',
+          alignItems: 'center',
+          gap: { xs: 2, sm: 4 },
+          py: { xs: 2, sm: 4 },
+          textAlign: { sm: 'center', md: 'left' },
+        }}
+      >
+        <Copyright />
+      </Container>
+    </React.Fragment>
+  );
+}