Bundle <linux/fuse.h> userspace header from Linux 6.10

Bundle <linux/fuse.h> userspace header from Linux 6.10

And include the required licensing information.  The only
change is a removed trailing empty line in
LICENSES/exceptions/Linux-syscall-note.

Bundling <linux/fuse.h> is the recommended way to deal with
the evolution of the FUSE userspace interface because
structs change sizes over time.  The kernel maintains
compatibility, but source-level compatibility on recompilation
may require additional code that is aware of older struct sizes.

Signed-off-by: Florian Weimer <fweimer@redhat.com>
Reviewed-by: DJ Delorie <dj@redhat.com>