updated chatTextfield.dart design and added file and gallery picker

lib/widget/filePick.dart

@@ -0,0 +1,22 @@
+import 'dart:developer';
+
+import 'package:file_picker/file_picker.dart';
+import 'package:image_picker/image_picker.dart';
+
+class FilePick {
+  static final _picker = ImagePicker();
+
+  static Future<XFile?> galleryPick() async {
+    final XFile? pickedImage = await _picker.pickImage(source: ImageSource.gallery);
+    if (pickedImage != null) {
+      log("Picked ${pickedImage.path} (${pickedImage.mimeType})");
+      return pickedImage;
+    }
+    return null;
+  }
+
+  static Future<String?> documentPick() async {
+    FilePickerResult? result = await FilePicker.platform.pickFiles();
+    return result?.files.single.path;
+  }
+}