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/scene/gui/line_edit.cpp b/scene/gui/line_edit.cpp
index c1cfef0381..fa08f6f512 100644
--- a/scene/gui/line_edit.cpp
+++ b/scene/gui/line_edit.cpp
@@ -590,9 +590,11 @@ Variant LineEdit::get_drag_data(const Point2 &p_point) {
 
 	return Variant();
 }
+
 bool LineEdit::can_drop_data(const Point2 &p_point, const Variant &p_data) const {
 	return p_data.get_type() == Variant::STRING;
 }
+
 void LineEdit::drop_data(const Point2 &p_point, const Variant &p_data) {
 	if (p_data.get_type() == Variant::STRING) {
 		set_cursor_at_pixel_pos(p_point.x);