feat: refactor project structure

Refactored the project structure so that each page has its own tree of components and a global "Components" folder for the components that is used by more than one page.
- Added an "assets" directory that exports all static images/icons/fonts/...etc

src/Components/Portal/Portal.jsx

@@ -0,0 +1,17 @@
+import React from "react";
+import ReactDOM from "react-dom";
+
+export const Portal = ({ children, className = "root-portal", el = "div" }) => {
+  const [container] = React.useState(document.createElement(el));
+
+  container.classList.add(className);
+
+  React.useEffect(() => {
+    document.body.appendChild(container);
+    return () => {
+      document.body.removeChild(container);
+    };
+  }, [container]);
+
+  return ReactDOM.createPortal(children, container);
+};