fix: update .gitignore to include IDE directories and gem files

Author: ydah

.gitignore

@@ -6,13 +6,11 @@
 /pkg/
 /spec/reports/
 /tmp/
-
-# rspec failure tracking
+/.idea/
+/.vscode/
 .rspec_status
-
-# bundler
 .bundle
 Gemfile.lock
 Gemfile.local
-
 /relnotes.md
+/*.gem/