added InstitutionsURLs page and required backend routes and models

compendium-frontend/src/components/ConnectedUsersSidebar.tsx

+import React from 'react';
+import { Link } from 'react-router-dom';
+import { Row } from 'react-bootstrap';
+import Sidebar from './SideBar';
+
+const ConnectedUsersSidebar = () => {
+    return (
+        <Sidebar>
+            <h5>Connected Users</h5>
+            <Row>
+                <Link to="/institutions-urls" className="link-text-underline">
+                    <span>Connected Institutions URLs</span>
+                </Link>
+            </Row>
+        </Sidebar>
+    )
+}
+
+export default ConnectedUsersSidebar
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