when saving sample and measurement info and RAW spectrum has not yet been...

when saving sample and measurement info and RAW spectrum has not yet been saved, it is saved for retrieving spectrum id.

Refactor spectrum saving methods and improve organization

Moved spectrum saving methods to BaseViewModel for better reuse.
Added new methods for cloud saving operations in BaseViewModel.
Updated ChartBaseViewModel with new method for retrieving raw spectrum ID.
Replaced inline code with method call in ChartViewModelInfo.
Enhanced error handling and logging in ChartViewModelInfo.
Cleaned up unused and added necessary using directives.