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.

2 files changed, 8 insertions, 0 deletions

diff --git a/modules/csg/csg_gizmos.cpp b/modules/csg/csg_gizmos.cpp
index ad04d9941b..c9569a6d9c 100644
--- a/modules/csg/csg_gizmos.cpp
+++ b/modules/csg/csg_gizmos.cpp
@@ -70,6 +70,7 @@ String CSGShape3DGizmoPlugin::get_handle_name(const EditorNode3DGizmo *p_gizmo,
 
 	return "";
 }
+
 Variant CSGShape3DGizmoPlugin::get_handle_value(EditorNode3DGizmo *p_gizmo, int p_idx) const {
 	CSGShape3D *cs = Object::cast_to<CSGShape3D>(p_gizmo->get_spatial_node());
 
@@ -102,6 +103,7 @@ Variant CSGShape3DGizmoPlugin::get_handle_value(EditorNode3DGizmo *p_gizmo, int
 
 	return Variant();
 }
+
 void CSGShape3DGizmoPlugin::set_handle(EditorNode3DGizmo *p_gizmo, int p_idx, Camera3D *p_camera, const Point2 &p_point) {
 	CSGShape3D *cs = Object::cast_to<CSGShape3D>(p_gizmo->get_spatial_node());
 
@@ -200,6 +202,7 @@ void CSGShape3DGizmoPlugin::set_handle(EditorNode3DGizmo *p_gizmo, int p_idx, Ca
 			s->set_outer_radius(d);
 	}
 }
+
 void CSGShape3DGizmoPlugin::commit_handle(EditorNode3DGizmo *p_gizmo, int p_idx, const Variant &p_restore, bool p_cancel) {
 	CSGShape3D *cs = Object::cast_to<CSGShape3D>(p_gizmo->get_spatial_node());
 
@@ -303,6 +306,7 @@ void CSGShape3DGizmoPlugin::commit_handle(EditorNode3DGizmo *p_gizmo, int p_idx,
 		ur->commit_action();
 	}
 }
+
 bool CSGShape3DGizmoPlugin::has_gizmo(Node3D *p_spatial) {
 	return Object::cast_to<CSGSphere3D>(p_spatial) || Object::cast_to<CSGBox3D>(p_spatial) || Object::cast_to<CSGCylinder3D>(p_spatial) || Object::cast_to<CSGTorus3D>(p_spatial) || Object::cast_to<CSGMesh3D>(p_spatial) || Object::cast_to<CSGPolygon3D>(p_spatial);
 }
diff --git a/modules/csg/csg_shape.cpp b/modules/csg/csg_shape.cpp
index 8a0e1097c2..a5ebb1f437 100644
--- a/modules/csg/csg_shape.cpp
+++ b/modules/csg/csg_shape.cpp
@@ -443,6 +443,7 @@ void CSGShape3D::_update_shape() {
 
 	set_base(root_mesh->get_rid());
 }
+
 AABB CSGShape3D::get_aabb() const {
 	return node_aabb;
 }
@@ -564,6 +565,7 @@ Array CSGShape3D::get_meshes() const {
 
 	return Array();
 }
+
 void CSGShape3D::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("_update_shape"), &CSGShape3D::_update_shape);
 	ClassDB::bind_method(D_METHOD("is_root_shape"), &CSGShape3D::is_root_shape);
@@ -627,6 +629,7 @@ CSGShape3D::~CSGShape3D() {
 		brush = nullptr;
 	}
 }
+
 //////////////////////////////////
 
 CSGBrush *CSGCombiner3D::_build_brush() {
@@ -2335,6 +2338,7 @@ void CSGPolygon3D::set_path_interval(float p_interval) {
 	_make_dirty();
 	update_gizmo();
 }
+
 float CSGPolygon3D::get_path_interval() const {
 	return path_interval;
 }