Improve example app UI (#193)

* Improve example app ui

* Store favorite services in local storage

* Use Text instead of SelectableText

* Improve colors

* Fix flutter analyzer issues

* Revert example app minimum sdk requirement

* Implement hasPermission api and improve ui flow

* More ui improvements

* Improve ScannedItem ui

* Improve control ui

* Change color theme to blue

* Minor improvements wip

* improve responsive ui and flow

* More improvements

* More improvements

* Update Mac podfile

* Fix home page scroll view

* Update app and package name

* Revert changelog

* Resolve Ai comments

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Co-authored-by: Foti Dim <foti@navideck.com>

lib/src/models/manufacturer_data.dart

@@ -8,6 +8,9 @@ class ManufacturerData {
 
   String get companyIdRadix16 => "0x0${companyId.toRadixString(16)}";
 
+  String get payloadRadix16 =>
+      "0x${payload.map((e) => e.toRadixString(16).toUpperCase().padLeft(2, '0')).join('')}";
+
   factory ManufacturerData.fromData(Uint8List data) {
     if (data.length < 2) {
       throw const FormatException("Invalid Manufacturer Data");