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, 6 insertions, 0 deletions

diff --git a/servers/rendering/rasterizer_rd/shaders/cubemap_downsampler.glsl b/servers/rendering/rasterizer_rd/shaders/cubemap_downsampler.glsl
index 9f3ecf6053..8d88e46727 100644
--- a/servers/rendering/rasterizer_rd/shaders/cubemap_downsampler.glsl
+++ b/servers/rendering/rasterizer_rd/shaders/cubemap_downsampler.glsl
@@ -37,6 +37,7 @@ layout(rgba16f, set = 1, binding = 0) uniform restrict writeonly imageCube dest_
 layout(push_constant, binding = 1, std430) uniform Params {
 	uint face_size;
 }
+
 params;
 
 #define M_PI 3.14159265359
@@ -46,26 +47,31 @@ void get_dir_0(out vec3 dir, in float u, in float v) {
 	dir[1] = v;
 	dir[2] = -u;
 }
+
 void get_dir_1(out vec3 dir, in float u, in float v) {
 	dir[0] = -1.0;
 	dir[1] = v;
 	dir[2] = u;
 }
+
 void get_dir_2(out vec3 dir, in float u, in float v) {
 	dir[0] = u;
 	dir[1] = 1.0;
 	dir[2] = -v;
 }
+
 void get_dir_3(out vec3 dir, in float u, in float v) {
 	dir[0] = u;
 	dir[1] = -1.0;
 	dir[2] = v;
 }
+
 void get_dir_4(out vec3 dir, in float u, in float v) {
 	dir[0] = u;
 	dir[1] = v;
 	dir[2] = 1.0;
 }
+
 void get_dir_5(out vec3 dir, in float u, in float v) {
 	dir[0] = -u;
 	dir[1] = v;