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, 4 insertions, 0 deletions

diff --git a/editor/plugins/animation_player_editor_plugin.cpp b/editor/plugins/animation_player_editor_plugin.cpp
index aba2d53eba..28d0e113d4 100644
--- a/editor/plugins/animation_player_editor_plugin.cpp
+++ b/editor/plugins/animation_player_editor_plugin.cpp
@@ -237,6 +237,7 @@ void AnimationPlayerEditor::_play_bw_from_pressed() {
 	//unstop
 	stop->set_pressed(false);
 }
+
 void AnimationPlayerEditor::_stop_pressed() {
 	if (!player) {
 		return;
@@ -305,6 +306,7 @@ void AnimationPlayerEditor::_animation_new() {
 	name->select_all();
 	name->grab_focus();
 }
+
 void AnimationPlayerEditor::_animation_rename() {
 	if (animation->get_item_count() == 0)
 		return;
@@ -318,6 +320,7 @@ void AnimationPlayerEditor::_animation_rename() {
 	name->select_all();
 	name->grab_focus();
 }
+
 void AnimationPlayerEditor::_animation_load() {
 	ERR_FAIL_COND(!player);
 	file->set_file_mode(EditorFileDialog::FILE_MODE_OPEN_FILE);
@@ -626,6 +629,7 @@ Dictionary AnimationPlayerEditor::get_state() const {
 
 	return d;
 }
+
 void AnimationPlayerEditor::set_state(const Dictionary &p_state) {
 	if (!p_state.has("visible") || !p_state["visible"]) {
 		return;