REAPER_TrackRouting2Graph

GUI implementation and other fix for TrackRouting2dot script in REAPER Initially from Reaper Community, User Fabian

Preparation

1. Install Graphviz on your computer
2. Check the Graphviz Path, it should be like: /some/thing/here/graphviz/bin/dot/

where dot

3. Goto the lua script and change the variable default_dot_path in line 23 to the result of the previous command.
4. Enjoy

Optimize RoadMap:

• [DONE!] Simple GUI interface
• [DONE!] Graphviz path check
• [DONE!] IO path & item Check
• [DONE!] user message window
• Windows OS File manager API (I only have Mac so ...)