Improvements in the management of private participants

An assembly can be private. This indicates that it is not an assembly open to general participation, it is limited. Either by a territorial or sectoral scope. Currently, the management of private participants is one to one load. The improvement would be to have the ability to upload a CSV with names and emails to upload a group of participants together. In this way an assembly admin or a superadmin can manage the private participants in a more agile way. Improvements: -Upload a CSV with names and emails. -Send notification to a previously registered participant. -The management of private participants would be maintained. You can remove them, as well as upload more CSVs for new uploads.