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/scroll_container.cpp b/scene/gui/scroll_container.cpp
index 2f54ece449..0b00883a71 100644
--- a/scene/gui/scroll_container.cpp
+++ b/scene/gui/scroll_container.cpp
@@ -470,6 +470,7 @@ bool ScrollContainer::is_v_scroll_enabled() const {
 int ScrollContainer::get_v_scroll() const {
 	return v_scroll->get_value();
 }
+
 void ScrollContainer::set_v_scroll(int p_pos) {
 	v_scroll->set_value(p_pos);
 	_cancel_drag();
@@ -478,6 +479,7 @@ void ScrollContainer::set_v_scroll(int p_pos) {
 int ScrollContainer::get_h_scroll() const {
 	return h_scroll->get_value();
 }
+
 void ScrollContainer::set_h_scroll(int p_pos) {
 	h_scroll->set_value(p_pos);
 	_cancel_drag();