Style: Enforce separation line between function definitions

I couldn't find a tool that enforces it, so I went the manual route:
```
find -name "thirdparty" -prune \
  -o -name "*.cpp" -o -name "*.h" -o -name "*.m" -o -name "*.mm" \
  -o -name "*.glsl" > files
perl -0777 -pi -e 's/\n}\n([^#])/\n}\n\n\1/g' $(cat files)
misc/scripts/fix_style.sh -c
```

This adds a newline after all `}` on the first column, unless they
are followed by `#` (typically `#endif`). This leads to having lots
of places with two lines between function/class definitions, but
clang-format then fixes it as we enforce max one line of separation.

This doesn't fix potential occurrences of function definitions which
are indented (e.g. for a helper class defined in a .cpp), but it's
better than nothing. Also can't be made to run easily on CI/hooks so
we'll have to be careful with new code.

Part of #33027.

1 files changed, 2 insertions, 0 deletions

diff --git a/editor/project_settings_editor.cpp b/editor/project_settings_editor.cpp
index 60b9902f68..4f9c6c2cf3 100644
--- a/editor/project_settings_editor.cpp
+++ b/editor/project_settings_editor.cpp
@@ -575,6 +575,7 @@ void ProjectSettingsEditor::_edit_item(Ref<InputEvent> p_exiting_event) {
 
 	_add_item(ie_type, p_exiting_event);
 }
+
 void ProjectSettingsEditor::_action_activated() {
 	TreeItem *ti = input_editor->get_selected();
 
@@ -1259,6 +1260,7 @@ void ProjectSettingsEditor::_translation_res_add(const String &p_path) {
 void ProjectSettingsEditor::_translation_res_option_file_open() {
 	translation_res_option_file_open->popup_centered_ratio();
 }
+
 void ProjectSettingsEditor::_translation_res_option_add(const String &p_path) {
 	ERR_FAIL_COND(!ProjectSettings::get_singleton()->has_setting("locale/translation_remaps"));