QOL improvement with the tree interactions

[lior-antonov]

I think we should make the tree view interactions more similar to a file explorer in the following way:

• Double left click to open a document
• Left click to select a document
• Shift left click to make range selection - exists
• Ctrl left click to add/removes from selection - exists
• Left clicking on brach splitting node selects all children nodes
• Left clicking on the background deselects everything
• Right clicking on a documents opens a menu that currently just lets you delete or duplicate selected documents(removes the repeating trash icon on each entry)
• Double clicking on a repo will ask the user if they want to pull its contents into the project