How to snake extrude in edit mode? I want to extruding edge/faces with flow movement using my drawing tablet instead of extruding with ctrl+RMB or rapidly type E

is there any solution how to do this? (with or without addon)
I don't think there is a way (as per my limited understanding). But in your case, I think to simplify the mouseclicks (without having to press Ctrl), you can select an edge or a face, and Select the Extrude to Cursor (same as Ctrl+RMB), and just click away :)

Like this (I'm not pressing Ctrl+RMB)