Add ability to remove old configurations to not litter hanging symlinks

I use Incus to add a GPU to a container, but doing so creates a symlink over time for each driver version on each upgrade.

These broken symlinks make ldconfig spam every single file each time it is ran.

I raised this with Incus, but Incus claims there is no clean-up mechanism, so I would like for one to be added if possible.

(1/1) upgrading ollama-cuda                                                                                                                                               [----------------------------------------------------------------------------------------------------------] 100%
ldconfig: File /usr/lib/libnvidia-ml.so.570.153.02 is empty, not checked.
ldconfig: File /usr/lib/libnvidia-cfg.so.570.153.02 is empty, not checked.
ldconfig: File /usr/lib/libcuda.so.570.153.02 is empty, not checked.
ldconfig: File /usr/lib/libcudadebugger.so.570.153.02 is empty, not checked.
ldconfig: File /usr/lib/libnvidia-opencl.so.570.153.02 is empty, not checked.
ldconfig: File /usr/lib/libnvidia-gpucomp.so.570.153.02 is empty, not checked.
ldconfig: File /usr/lib/libnvidia-ptxjitcompiler.so.570.153.02 is empty, not checked.
ldconfig: File /usr/lib/libnvidia-allocator.so.570.153.02 is empty, not checked.
ldconfig: File /usr/lib/libnvidia-pkcs11.so.570.153.02 is empty, not checked.
ldconfig: File /usr/lib/libnvidia-pkcs11-openssl3.so.570.153.02 is empty, not checked.
ldconfig: File /usr/lib/libnvidia-nvvm.so.570.153.02 is empty, not checked.

[0] # ls -lah /usr/lib/libnvidia-ml.so.* # <ls> aliased to «lsd»
lrwxrwxrwx root   root    25 B  Sun Jun  8 12:53:41 2025  /usr/lib/libnvidia-ml.so.1 ⇒ libnvidia-ml.so.575.57.08
.rwxr-xr-x root   root     0 B  Tue Jun  3 16:01:30 2025  /usr/lib/libnvidia-ml.so.570.153.02
.rwxr-xr-x nobody nobody 2.2 MB Sun Jun  1 15:22:58 2025  /usr/lib/libnvidia-ml.so.575.57.08

Start by tracing how Incus GPU configuration creates versioned library symlinks and how the NVIDIA container toolkit could identify obsolete entries. Review the reported ldconfig output and the referenced Incus discussion; done means old configuration artifacts are cleaned up without leaving broken or empty library entries.