fix: clean gitignore for Godot C#

.gitignore

@@ -0,0 +1,30 @@
+# Godot 4+ imported files
+.import/
+.godot/
+
+# Mono / C# build folders
+.mono/
+bin/
+obj/
+
+# Visual Studio / Rider / VS Code
+.vs/
+.vscode/
+*.user
+*.suo
+*.userprefs
+*.sln.docstates
+
+# OS junk
+.DS_Store
+Thumbs.db
+
+# Logs
+*.log
+
+# Build/export folders (optional depending on project)
+export/
+build/
+
+# Temporary files
+*.tmp