- Use `StringRef` over `StringRefNull`, since it handles `nullptr` in
its constructor and gives more flexibility about the string's source.
- Change `const char *` to `StringRef` as well, for improved ergonomics
and efficiency.
- Move `add_interface_socket_from_node` to a .cc file. It's not small
or performance sensitive enough to be inlined.
- Avoid allocating empty strings for item descriptions.
- Allocate with `BLI_strdupn` to avoid unnecessary `strlen` calls.
- Move a bit more code into a proper namespace.
Pull Request: https://projects.blender.org/blender/blender/pulls/112721
8954b70d49