Port the macOS version of the `BLI_delete_soft` function from raw
runtime `objc_*` calls function to proper Objective-C for increased
readability and long-term maintainability. This new function is placed
in a new `intern/fileops_apple.mm` file, analogous to the existing
`intern/storage_apple.mm` file.
Pull Request: https://projects.blender.org/blender/blender/pulls/126766
fe93de1a91