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/tabs.cpp b/scene/gui/tabs.cpp
index 2dce34daf0..4c3fa2f038 100644
--- a/scene/gui/tabs.cpp
+++ b/scene/gui/tabs.cpp
@@ -435,6 +435,7 @@ void Tabs::set_tab_disabled(int p_tab, bool p_disabled) {
 	tabs.write[p_tab].disabled = p_disabled;
 	update();
 }
+
 bool Tabs::get_tab_disabled(int p_tab) const {
 	ERR_FAIL_INDEX_V(p_tab, tabs.size(), false);
 	return tabs[p_tab].disabled;
@@ -447,6 +448,7 @@ void Tabs::set_tab_right_button(int p_tab, const Ref<Texture2D> &p_right_button)
 	update();
 	minimum_size_changed();
 }
+
 Ref<Texture2D> Tabs::get_tab_right_button(int p_tab) const {
 	ERR_FAIL_INDEX_V(p_tab, tabs.size(), Ref<Texture2D>());
 	return tabs[p_tab].right_button;
@@ -866,6 +868,7 @@ void Tabs::set_drag_to_rearrange_enabled(bool p_enabled) {
 bool Tabs::get_drag_to_rearrange_enabled() const {
 	return drag_to_rearrange_enabled;
 }
+
 void Tabs::set_tabs_rearrange_group(int p_group_id) {
 	tabs_rearrange_group = p_group_id;
 }