Additional fixes for firebase login. Capture basic local state.

client/src/pages/landing/landing.page.jsx

@@ -13,3 +13,4 @@ export default function LandingPage() {
     </div>
   );
 }
+

client/src/pages/sign-in/sign-in.page.jsx

@@ -0,0 +1,13 @@
+import React from "react";
+import signInComponent from "../../components/sign-in-form/sign-in-form.component";
+
+import { Redirect } from "react-router-dom";
+
+
+export default function SignInPage() {
+  return (
+    <div>
+      <signInComponent />
+    </div>
+  );
+}