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/scene/animation/animation_tree.cpp b/scene/animation/animation_tree.cpp
index 81575b7f48..671c87eb58 100644
--- a/scene/animation/animation_tree.cpp
+++ b/scene/animation/animation_tree.cpp
@@ -289,6 +289,7 @@ float AnimationNode::_blend_node(const StringName &p_subpath, const Vector<Strin
 int AnimationNode::get_input_count() const {
 	return inputs.size();
 }
+
 String AnimationNode::get_input_name(int p_input) {
 	ERR_FAIL_INDEX_V(p_input, inputs.size(), String());
 	return inputs[p_input].name;
@@ -368,6 +369,7 @@ Array AnimationNode::_get_filters() const {
 
 	return paths;
 }
+
 void AnimationNode::_set_filters(const Array &p_filters) {
 	filter.clear();
 	for (int i = 0; i < p_filters.size(); i++) {
@@ -1260,6 +1262,7 @@ NodePath AnimationTree::get_animation_player() const {
 bool AnimationTree::is_state_invalid() const {
 	return !state.valid;
 }
+
 String AnimationTree::get_invalid_state_reason() const {
 	return state.invalid_reasons;
 }
@@ -1420,6 +1423,7 @@ bool AnimationTree::_get(const StringName &p_name, Variant &r_ret) const {
 
 	return false;
 }
+
 void AnimationTree::_get_property_list(List<PropertyInfo> *p_list) const {
 	if (properties_dirty) {
 		const_cast<AnimationTree *>(this)->_update_properties();