ENH: DICOM database and plugin management #4
Description
Need to do operations like
- Make sure that the slicer database is open, and valid
- If not open, create a new slicer database
- Make sure that the DICOM plugin is installed. If not installed - throw an error
- Close the dicom database in the end.
Not sure if these operations are necessary with the default dicom database in Slicer. These operations might be necessary when using a temporary database, or when creating a new database somewhere else (for example in the output directory).