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/server/jobstate.rs

@@ -42,7 +42,7 @@ use std::path::{Path, PathBuf};
 use anyhow::{bail, format_err, Error};
 use serde::{Deserialize, Serialize};
 
-use proxmox::tools::fs::{
+use proxmox_sys::fs::{
     create_path, file_read_optional_string, replace_file, CreateOptions,
 };