graph drawing tool

bugfix: save modified files in save directory

scenario: open app from .love file, press ctrl+e

Before this change the source file showed up empty.

Created by  Kartik K. Agaram  on September 5, 2022
HKV72RZVJEOF5GCHCRKEBGC3FQN7AYETY7LKEJUXVIQAB4QPEPYQC
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