Add Contact support button (#45)

src/components/AdminLayout.tsx

@@ -0,0 +1,26 @@
+import { Layout, Menu } from 'react-admin';
+import LiveHelpIcon from '@mui/icons-material/LiveHelp';
+
+const DEFAULT_SUPPORT_LINK = "https://github.com/etkecc/synapse-admin/issues";
+const supportLink = (): string => {
+    try {
+        new URL(localStorage.getItem("support_url") || ''); // Check if the URL is valid
+        return localStorage.getItem("support_url") || DEFAULT_SUPPORT_LINK;
+    } catch (e) {
+        return DEFAULT_SUPPORT_LINK;
+    }
+};
+
+
+const AdminMenu = () => (
+    <Menu>
+        <Menu.ResourceItems />
+        <Menu.Item to={supportLink()} target="_blank" primaryText="Contact support" leftIcon={<LiveHelpIcon />} />
+    </Menu>
+);
+
+export const AdminLayout = ({ children }) => (
+    <Layout menu={AdminMenu}>
+        {children}
+    </Layout>
+);