Add: backend dir and moved frontend to frontend dir

frontend/src/context/DataContext.jsx

@@ -0,0 +1,23 @@
+import { createContext } from "react";
+import PropTypes from "prop-types";
+import { useData } from "../hooks/useData";
+
+export const DataContext = createContext();
+
+export const DataProvider = ({ config, onError, children }) => {
+  const data = useData(config, onError);
+  
+  return (
+    <DataContext.Provider value={data}>
+      {children}
+    </DataContext.Provider>
+  );
+};
+
+DataProvider.propTypes = {
+  config: PropTypes.shape({
+    baseUrl: PropTypes.string.isRequired,
+    params: PropTypes.object,
+  }).isRequired,
+  children: PropTypes.node.isRequired,
+};