Fix: Improve .gitignore for Python projects

This commit updates the .gitignore file to better suit Python projects by:

- Adding common Python-related files and directories to be ignored, such as .env, .pypirc, .pytest_cache, .vscode, __pycache__, dist, build, and firefly_viewer.egg-info.
- Removing redundant or less relevant entries.

.gitignore

@@ -1,15 +1,9 @@
-build
-dist
-.venv
-__pycache__
-*.py[cod]
-*_pycache_*
-*.pyo
-*.pyd
-*.db
-*.sqlite
-*.egg-info
-*.egg
-*.log
-*.env
+.env
 .pypirc
+.pytest_cache
+.venv
+.vscode
+__pycache__
+dist
+build
+firefly_viewer.egg-info