Authentication check plus signin screen added to frontend

Frontend/patient_manager/lib/components/mybutton.dart

@@ -0,0 +1,33 @@
+import 'package:flutter/material.dart';
+
+class MyButton extends StatelessWidget {
+  final void Function() onTap;
+  final String buttonText;
+
+  const MyButton({super.key, required this.onTap, required this.buttonText});
+
+  @override
+  Widget build(BuildContext context) {
+    return GestureDetector(
+      onTap: onTap,
+      child: Container(
+        padding: const EdgeInsets.all(25),
+        margin: const EdgeInsets.symmetric(horizontal: 25),
+        decoration: BoxDecoration(
+          color: Colors.blueAccent,
+          borderRadius: BorderRadius.circular(10),
+        ),
+        child: Center(
+          child: Text(
+            buttonText,
+            style: const TextStyle(
+              fontWeight: FontWeight.bold,
+              fontSize: 20,
+              color: Colors.white,
+            ),
+          ),
+        ),
+      ),
+    );
+  }
+}