update to proxmox-sys 0.2 crate

- imported pbs-api-types/src/common_regex.rs from old proxmox crate
- use hex crate to generate/parse hex digest
- remove all reference to proxmox crate (use proxmox-sys and
  proxmox-serde instead)

Signed-off-by: Dietmar Maurer <dietmar@proxmox.com>

src/tape/changer/mtx/mtx_wrapper.rs

@@ -1,6 +1,6 @@
 use anyhow::Error;
 
-use pbs_tools::run_command;
+use proxmox_sys::command::run_command;
 use pbs_api_types::ScsiTapeChanger;
 use pbs_tape::MtxStatus;