This commit significantly expands the functionalities of TaskViewModel to manage both tasks and test suites in a unified manner. The view model now serves as the primary business logic class that interacts with the UI for task and test suite management.
Key Enhancements:
- Introduced `_testSuites` list to store TestSuite objects.
- Added `combinedDataSource` to hold both tasks and test suites.
- Introduced `selectTestSuite` and `deselectTestSuite` methods for TestSuite selection management.
- Added methods for TestSuite CRUD operations (`addTestSuite`, `fetchTestSuites`, `_saveTestSuitesToPrefs`).
- Created `fetchAndCombineData` method to fetch and combine tasks and test suites into a single list, `combinedDataSource`.
This update provides a more robust and unified approach for managing tasks and test suites, thereby improving the application's modularity and scalability.
