Refactor schedule components and update imports for garage door and w… (#271)

…ater heater modules

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## Jira Ticket
[SP-1620](https://syncrow.atlassian.net/browse/SP-1620)

## Description

<!--- Describe your changes in detail -->
Refactor schedule components and make this fetcher as a reusable and fix
bugs related to it

## Type of Change

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

- [ x] ✨ 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-1620]:
https://syncrow.atlassian.net/browse/SP-1620?atlOrigin=eyJpIjoiNWRkNTljNzYxNjVmNDY3MDlhMDU5Y2ZhYzA5YTRkZjUiLCJwIjoiZ2l0aHViLWNvbS1KU1cifQ

lib/utils/constants/api_const.dart

@@ -136,4 +136,5 @@ abstract class ApiEndpoints {
 
   static const String assignDeviceToRoom =
       '/projects/{projectUuid}/communities/{communityUuid}/spaces/{spaceUuid}/subspaces/{subSpaceUuid}/devices/{deviceUuid}';
+  static const String saveSchedule = '/schedule/{deviceUuid}';
 }