FEATURE: Select All Checkbox for entity list view in investigations

[jlstro]

Is your feature request related to a problem? Please describe.
Adding entities to a network diagram manually from the UI requires the user to manually select each entity in the list.

Describe the solution you'd like
There should be a Select All checkbox

Describe alternatives you've considered
There could also be a import all persons/companies/real estate entities functionality in the network diagram view, depending on what entities are present in the investigation.

Additional context
It could sit above the checkboxes here

[tillprochaska]

+1 on having a select all checkbox. That’s actually one thing I have on my list in order to make timelines work with existing entities (but it would work with network diagrams and lists too).