[FEA] - Multiselect of nodes from data table

[defendable-sindre]

Describe the solution you'd like

Multiselect of nodes from datatable search and ability to run shortest path +++ on the selected nodes.

• For graphistry UI, add multiselect from the datatable.
• Have the ability to search for one value, select. Do a new search, select.
• These selections could then be used to perform shortest path etc.