Update .gitignore

.gitignore

@@ -1,7 +1,12 @@
+# Godot 4+ specific ignores
+.godot/
+
 # Godot-specific ignores
 .import/
 export.cfg
 export_presets.cfg
+# Dummy HTML5 export presets file for continuous integration
+!.github/dist/export_presets.cfg
 
 # Imported translations (automatically generated from CSV files)
 *.translation
@@ -9,3 +14,9 @@ export_presets.cfg
 # Mono-specific ignores
 .mono/
 data_*/
+mono_crash.*.json
+
+# System/tool-specific ignores
+.directory
+.DS_Store
+*~