excalidraw2 autosave1 brainstorming tool1 builder1 crm addon1 design1 diagram1 diagram tool1 draw1 drawing module1 image map1 json import export1 mermaid1 mind map1 pdf export1 perfex crm module1 perfex extension1 perfex whiteboard1 presentation1 project planning1 sketch1 svg map1 vector map1 visual collaboration1 whiteboard1 whiteboard integration1