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, 4 insertions, 0 deletions

diff --git a/core/os/file_access.cpp b/core/os/file_access.cpp
index f31842bcae..8b13e53812 100644
--- a/core/os/file_access.cpp
+++ b/core/os/file_access.cpp
@@ -170,6 +170,7 @@ uint16_t FileAccess::get_16() const {
 
 	return res;
 }
+
 uint32_t FileAccess::get_32() const {
 	uint32_t res;
 	uint16_t a, b;
@@ -187,6 +188,7 @@ uint32_t FileAccess::get_32() const {
 
 	return res;
 }
+
 uint64_t FileAccess::get_64() const {
 	uint64_t res;
 	uint32_t a, b;
@@ -394,6 +396,7 @@ void FileAccess::store_16(uint16_t p_dest) {
 	store_8(a);
 	store_8(b);
 }
+
 void FileAccess::store_32(uint32_t p_dest) {
 	uint16_t a, b;
 
@@ -407,6 +410,7 @@ void FileAccess::store_32(uint32_t p_dest) {
 	store_16(a);
 	store_16(b);
 }
+
 void FileAccess::store_64(uint64_t p_dest) {
 	uint32_t a, b;