Add cypress artifacts directory (videos/screenshots) to gitignore and sort items in gitignore (#5900)

* Add cypress artifacts to gitignore and sort items in gitignore

* update sort

.gitignore

@@ -1,42 +1,43 @@
-*.pyc
-*.swp
-yarn-error.log
-_modules
-superset/assets/coverage/*
-changelog.sh
-.DS_Store
-.coverage
-_build
-_static
-_images
-_modules
-superset/bin/supersetc
-env_py3
-envpy3
-.eggs
-build
-*.db
-tmp
-superset_config.py
-local_config.py
-env
-dist
-superset.egg-info/
-app.db
 *.bak
-.idea
+*.db
+*.pyc
 *.sqllite
-.vscode
+*.swp
+.coverage
+.DS_Store
+.eggs
+.idea
 .python-version
 .tox
+.vscode
+_build
+_images
+_modules
+_static
+build
+app.db
+changelog.sh
+dist
 dump.rdb
+env
+env_py3
+envpy3
+local_config.py
+superset_config.py
+superset.egg-info/
+superset/bin/supersetc
+tmp
 
 # Node.js, webpack artifacts
 *.entry.js
 *.js.map
 node_modules
 npm-debug.log*
+superset/assets/coverage/*
+superset/assets/cypress/screenshots
+superset/assets/cypress/videos
 superset/assets/version_info.json
+yarn-error.log
 
 # IntelliJ
 *.iml