[FE] On Uba Gateway device the Icons of the devices inside are not all of them displayed (#359)

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## Jira Ticket
[SP-1569](https://syncrow.atlassian.net/browse/SP-1569)

## Description

add devices and icons for them

## Type of Change

<!--- Put an `x` in all the boxes that apply: -->

- [ ] ✨ New feature (non-breaking change which adds functionality)
- [x] 🛠️ Bug fix (non-breaking change which fixes an issue)
- [ ] ❌ Breaking change (fix or feature that would cause existing
functionality to change)
- [ ] 🧹 Code refactor
- [ ] ✅ Build configuration change
- [ ] 📝 Documentation
- [ ] 🗑️ Chore 


[SP-1569]:
https://syncrow.atlassian.net/browse/SP-1569?atlOrigin=eyJpIjoiNWRkNTljNzYxNjVmNDY3MDlhMDU5Y2ZhYzA5YTRkZjUiLCJwIjoiZ2l0aHViLWNvbS1KU1cifQ

lib/utils/constants/assets.dart

@@ -4,6 +4,8 @@ class Assets {
   static const String webBackground = 'assets/images/web_Background.svg';
   static const String webBackgroundPng = 'assets/images/web_Background.png';
   static const String blackLogo = 'assets/images/black-logo.png';
+  static const String fourSceenSwitch = 'assets/images/4_sceen_switch.svg';
+  static const String sixSceenSwitch = 'assets/images/6_sceen_switch.svg';
   static const String logo = 'assets/images/Logo.svg';
   static const String logoHorizontal = 'assets/images/logo_horizontal.png';
   static const String vector = 'assets/images/Vector.png';