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, 6 insertions, 0 deletions

diff --git a/scene/gui/file_dialog.cpp b/scene/gui/file_dialog.cpp
index adf67bc7df..158662e0fc 100644
--- a/scene/gui/file_dialog.cpp
+++ b/scene/gui/file_dialog.cpp
@@ -541,6 +541,7 @@ void FileDialog::clear_filters() {
 	update_filters();
 	invalidate();
 }
+
 void FileDialog::add_filter(const String &p_filter) {
 	filters.push_back(p_filter);
 	update_filters();
@@ -560,17 +561,21 @@ Vector<String> FileDialog::get_filters() const {
 String FileDialog::get_current_dir() const {
 	return dir->get_text();
 }
+
 String FileDialog::get_current_file() const {
 	return file->get_text();
 }
+
 String FileDialog::get_current_path() const {
 	return dir->get_text().plus_file(file->get_text());
 }
+
 void FileDialog::set_current_dir(const String &p_dir) {
 	dir_access->change_dir(p_dir);
 	update_dir();
 	invalidate();
 }
+
 void FileDialog::set_current_file(const String &p_file) {
 	file->set_text(p_file);
 	update_dir();
@@ -582,6 +587,7 @@ void FileDialog::set_current_file(const String &p_file) {
 			file->grab_focus();
 	}
 }
+
 void FileDialog::set_current_path(const String &p_path) {
 	if (!p_path.size())
 		return;