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, 2 insertions, 0 deletions

diff --git a/core/math/transform.cpp b/core/math/transform.cpp
index 0f62c8b2c0..0274dd18af 100644
--- a/core/math/transform.cpp
+++ b/core/math/transform.cpp
@@ -145,6 +145,7 @@ void Transform::scale_basis(const Vector3 &p_scale) {
 void Transform::translate(real_t p_tx, real_t p_ty, real_t p_tz) {
 	translate(Vector3(p_tx, p_ty, p_tz));
 }
+
 void Transform::translate(const Vector3 &p_translation) {
 	for (int i = 0; i < 3; i++) {
 		origin[i] += basis[i].dot(p_translation);
@@ -174,6 +175,7 @@ bool Transform::is_equal_approx(const Transform &p_transform) const {
 bool Transform::operator==(const Transform &p_transform) const {
 	return (basis == p_transform.basis && origin == p_transform.origin);
 }
+
 bool Transform::operator!=(const Transform &p_transform) const {
 	return (basis != p_transform.basis || origin != p_transform.origin);
 }