Cache tools server-side to keep state between switches
Have SimpleRadialMenu be generic enough to be inherited
Add ToolSelectorMenu and EntityToolMenu seperate radial menus
Add ChangeModeCmd / SetMode and change callback for Mode to EntitiesTool
Forgot this
Add ChangeLibraryAttributeCmd and support for changing the currently selected entity
Add stub EditorEntityList and EditorEntityItem
Limit action time for Entities Tool
Add PlaceEntityAction to make placing entities undoable/redoable
Only open the entity tool menu if Reload is held but Duck isn't (prevent it popping up briefly when redoing)
Improve Editor Entity List view
Add icons for each entity tool mode