Added some useful gitignore entries.

Author: ZviBaratz

.gitignore

@@ -1,2 +1,18 @@
-__pycache__
+# Virtual environment directory
+venv
+.venv
+
+# Cache directories and byte-code files
+*.py[cod]
+__pycache__/
+.pytest_cache/
+.ipynb_checkpoints
 .coverage
+
+# Editor directories and files
+.idea
+.vscode
+.vs
+
+# Local solutions directory
+solutions