Finetune .gitignore

Instead of ignoring the whole content folder, only ignore folders
that we sync. Add a few more ignore files for python and IDEs.
Signed-off-by: NAndrea Frittoli <andrea.frittoli@gmail.com>

.gitignore

-resources/_gen/
-public/
+# Node
 package-lock.json
 node_modules/
+
+# Generated content
+resources/_gen/
+public/
 assets/js/version-switcher.js
-content/en/docs/
-.coverage
+
+# IDEs
 .vscode
-tkn_web_env
\ No newline at end of file
+**/.idea/
+.coverage
+
+# Python file for sync
+tkn_web_env
+**/.venv
+**/__pycache__/
+
+# Synced docs
+content/en/docs/Pipelines
+content/en/docs/Triggers
+content/en/docs/CLI
+content/en/vault/