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, 1 insertions, 0 deletions

diff --git a/platform/uwp/app.cpp b/platform/uwp/app.cpp
index c99ce5ee16..6090d13854 100644
--- a/platform/uwp/app.cpp
+++ b/platform/uwp/app.cpp
@@ -396,6 +396,7 @@ void App::key_event(Windows::UI::Core::CoreWindow ^ sender, bool p_pressed, Wind
 
 	os->queue_key_event(ke);
 }
+
 void App::OnKeyDown(CoreWindow ^ sender, KeyEventArgs ^ args) {
 	key_event(sender, true, args);
 }