move src/server/formatter.rs to proxmox-rest-server crate

Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>

src/api2/reader/environment.rs

@@ -7,9 +7,9 @@ use proxmox::api::{RpcEnvironment, RpcEnvironmentType};
 
 use pbs_datastore::backup_info::BackupDir;
 use pbs_api_types::Authid;
+use proxmox_rest_server::formatter::*;
 
 use crate::backup::DataStore;
-use crate::server::formatter::*;
 use crate::server::WorkerTask;
 
 //use proxmox::tools;