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, 5 insertions, 0 deletions

diff --git a/scene/3d/light_3d.cpp b/scene/3d/light_3d.cpp
index 1fa50b6872..e1ac562e94 100644
--- a/scene/3d/light_3d.cpp
+++ b/scene/3d/light_3d.cpp
@@ -70,6 +70,7 @@ void Light3D::set_shadow(bool p_enable) {
 		update_configuration_warning();
 	}
 }
+
 bool Light3D::has_shadow() const {
 	return shadow;
 }
@@ -78,6 +79,7 @@ void Light3D::set_negative(bool p_enable) {
 	negative = p_enable;
 	RS::get_singleton()->light_set_negative(light, p_enable);
 }
+
 bool Light3D::is_negative() const {
 	return negative;
 }
@@ -86,6 +88,7 @@ void Light3D::set_cull_mask(uint32_t p_cull_mask) {
 	cull_mask = p_cull_mask;
 	RS::get_singleton()->light_set_cull_mask(light, p_cull_mask);
 }
+
 uint32_t Light3D::get_cull_mask() const {
 	return cull_mask;
 }
@@ -96,6 +99,7 @@ void Light3D::set_color(const Color &p_color) {
 	// The gizmo color depends on the light color, so update it.
 	update_gizmo();
 }
+
 Color Light3D::get_color() const {
 	return color;
 }
@@ -355,6 +359,7 @@ Light3D::~Light3D() {
 	if (light.is_valid())
 		RenderingServer::get_singleton()->free(light);
 }
+
 /////////////////////////////////////////
 
 void DirectionalLight3D::set_shadow_mode(ShadowMode p_mode) {