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, 7 insertions, 0 deletions

diff --git a/servers/rendering/rendering_server_viewport.cpp b/servers/rendering/rendering_server_viewport.cpp
index 660c96e441..4491f699dc 100644
--- a/servers/rendering/rendering_server_viewport.cpp
+++ b/servers/rendering/rendering_server_viewport.cpp
@@ -589,12 +589,14 @@ void RenderingServerViewport::viewport_set_hide_scenario(RID p_viewport, bool p_
 
 	viewport->hide_scenario = p_hide;
 }
+
 void RenderingServerViewport::viewport_set_hide_canvas(RID p_viewport, bool p_hide) {
 	Viewport *viewport = viewport_owner.getornull(p_viewport);
 	ERR_FAIL_COND(!viewport);
 
 	viewport->hide_canvas = p_hide;
 }
+
 void RenderingServerViewport::viewport_set_disable_environment(RID p_viewport, bool p_disable) {
 	Viewport *viewport = viewport_owner.getornull(p_viewport);
 	ERR_FAIL_COND(!viewport);
@@ -608,12 +610,14 @@ void RenderingServerViewport::viewport_attach_camera(RID p_viewport, RID p_camer
 
 	viewport->camera = p_camera;
 }
+
 void RenderingServerViewport::viewport_set_scenario(RID p_viewport, RID p_scenario) {
 	Viewport *viewport = viewport_owner.getornull(p_viewport);
 	ERR_FAIL_COND(!viewport);
 
 	viewport->scenario = p_scenario;
 }
+
 void RenderingServerViewport::viewport_attach_canvas(RID p_viewport, RID p_canvas) {
 	Viewport *viewport = viewport_owner.getornull(p_viewport);
 	ERR_FAIL_COND(!viewport);
@@ -639,6 +643,7 @@ void RenderingServerViewport::viewport_remove_canvas(RID p_viewport, RID p_canva
 	viewport->canvas_map.erase(p_canvas);
 	canvas->viewports.erase(p_viewport);
 }
+
 void RenderingServerViewport::viewport_set_canvas_transform(RID p_viewport, RID p_canvas, const Transform2D &p_offset) {
 	Viewport *viewport = viewport_owner.getornull(p_viewport);
 	ERR_FAIL_COND(!viewport);
@@ -646,6 +651,7 @@ void RenderingServerViewport::viewport_set_canvas_transform(RID p_viewport, RID
 	ERR_FAIL_COND(!viewport->canvas_map.has(p_canvas));
 	viewport->canvas_map[p_canvas].transform = p_offset;
 }
+
 void RenderingServerViewport::viewport_set_transparent_background(RID p_viewport, bool p_enabled) {
 	Viewport *viewport = viewport_owner.getornull(p_viewport);
 	ERR_FAIL_COND(!viewport);
@@ -660,6 +666,7 @@ void RenderingServerViewport::viewport_set_global_canvas_transform(RID p_viewpor
 
 	viewport->global_transform = p_transform;
 }
+
 void RenderingServerViewport::viewport_set_canvas_stacking(RID p_viewport, RID p_canvas, int p_layer, int p_sublayer) {
 	Viewport *viewport = viewport_owner.getornull(p_viewport);
 	ERR_FAIL_COND(!viewport);