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, 2 insertions, 0 deletions

diff --git a/modules/mono/utils/mono_reg_utils.cpp b/modules/mono/utils/mono_reg_utils.cpp
index eff2c7335d..1b4fe68582 100644
--- a/modules/mono/utils/mono_reg_utils.cpp
+++ b/modules/mono/utils/mono_reg_utils.cpp
@@ -226,6 +226,7 @@ cleanup:
 
 	return msbuild_tools_path;
 }
+
 } // namespace MonoRegUtils
 
 #endif // WINDOWS_ENABLED
diff --git a/modules/mono/utils/string_utils.cpp b/modules/mono/utils/string_utils.cpp
index 76d0b9bc9b..da1b719d99 100644
--- a/modules/mono/utils/string_utils.cpp
+++ b/modules/mono/utils/string_utils.cpp
@@ -81,6 +81,7 @@ int sfind(const String &p_text, int p_from) {
 
 	return -1;
 }
+
 } // namespace
 
 String sformat(const String &p_text, const Variant &p1, const Variant &p2, const Variant &p3, const Variant &p4, const Variant &p5) {