Add .idea to .gitignore (#784)

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Signed-off-by: Tcc0403 <76503978+Tcc0403@users.noreply.github.com>

Author: Tcc0403

.gitignore

@@ -6,6 +6,7 @@ site/
 venv/
 .ipynb_checkpoints/
 .vscode/
+.idea/
 
 # Misc
 .DS_Store