add dependency on expandale pkg

pubspec.lock

@@ -253,6 +253,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "3.0.0"
+  expandable:
+    dependency: "direct main"
+    description:
+      name: expandable
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "5.0.1"
   expansion_tile_card:
     dependency: "direct main"
     description:

pubspec.yaml

@@ -36,6 +36,7 @@ dependencies:
   email_validator: ^2.0.1
   event_bus: ^2.0.0
   exif: ^3.0.0
+  expandable: ^5.0.1
   expansion_tile_card: ^2.0.0
   extended_image: ^6.0.1
   fast_base58: ^0.2.1