added batch file upload logic

pubspec.lock

@@ -185,6 +185,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "3.1.2"
+  dbus:
+    dependency: transitive
+    description:
+      name: dbus
+      sha256: "0ce9b0a839e6dee59a37a623d2fc26a35bbbe6404213e419b0d6411023d62645"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.7.14"
   decimal:
     dependency: "direct main"
     description:
@@ -233,6 +241,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "7.0.1"
+  file_picker:
+    dependency: "direct main"
+    description:
+      name: file_picker
+      sha256: f13a03000d942e476bc1ff0a736d2e9de711d2f89a95cd4c1d88f861c3348387
+      url: "https://pub.dev"
+    source: hosted
+    version: "11.0.2"
   firebase_core:
     dependency: "direct main"
     description:
@@ -294,6 +310,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "5.0.0"
+  flutter_plugin_android_lifecycle:
+    dependency: transitive
+    description:
+      name: flutter_plugin_android_lifecycle
+      sha256: "3854fe5e3bff0b113c658f260b90c95dea17c92db0f2addeac2e343dd9969785"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.0.35"
   flutter_svg:
     dependency: "direct main"
     description:
@@ -1111,4 +1135,4 @@ packages:
     version: "3.1.3"
 sdks:
   dart: ">=3.10.0 <4.0.0"
-  flutter: ">=3.35.0"
+  flutter: ">=3.38.0"