split proxmox-file-restore into its own crate

This also moves a couple of required utilities such as
logrotate and some file descriptor methods to pbs-tools.

Note that the logrotate usage and run-dir handling should be
improved to work as a regular user as this *should* (IMHO)
be a regular unprivileged command (including running
qemu given the kvm privileges...)

Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>

src/bin/proxmox-backup-api.rs

@@ -38,7 +38,7 @@ async fn run() -> Result<(), Error> {
 
     config::update_self_signed_cert(false)?;
 
-    proxmox_backup::tools::create_run_dir()?;
+    proxmox_backup::server::create_run_dir()?;
 
     proxmox_backup::rrd::create_rrdb_dir()?;
     proxmox_backup::server::jobstate::create_jobstate_dir()?;