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, 3 insertions, 0 deletions

diff --git a/scene/gui/popup_menu.cpp b/scene/gui/popup_menu.cpp
index 52fe991f83..c5c6305315 100644
--- a/scene/gui/popup_menu.cpp
+++ b/scene/gui/popup_menu.cpp
@@ -757,6 +757,7 @@ void PopupMenu::set_item_text(int p_idx, const String &p_text) {
 	control->update();
 	child_controls_changed();
 }
+
 void PopupMenu::set_item_icon(int p_idx, const Ref<Texture2D> &p_icon) {
 	ERR_FAIL_INDEX(p_idx, items.size());
 	items.write[p_idx].icon = p_icon;
@@ -764,6 +765,7 @@ void PopupMenu::set_item_icon(int p_idx, const Ref<Texture2D> &p_icon) {
 	control->update();
 	child_controls_changed();
 }
+
 void PopupMenu::set_item_checked(int p_idx, bool p_checked) {
 	ERR_FAIL_INDEX(p_idx, items.size());
 
@@ -772,6 +774,7 @@ void PopupMenu::set_item_checked(int p_idx, bool p_checked) {
 	control->update();
 	child_controls_changed();
 }
+
 void PopupMenu::set_item_id(int p_idx, int p_id) {
 	ERR_FAIL_INDEX(p_idx, items.size());
 	items.write[p_idx].id = p_id;