add pbs-api-types subcrate, move key_derivation

move key_derivation to pbs-datastore

pbs-api-types should only contain "basic" types which
* are usually required by clients
* don't depend on pbs-related code directly

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

src/bin/proxmox_backup_client/key.rs

@@ -13,8 +13,10 @@ use proxmox::api::router::ReturnType;
 use proxmox::sys::linux::tty;
 use proxmox::tools::fs::{file_get_contents, replace_file, CreateOptions};
 
+use pbs_datastore::{KeyInfo, Kdf};
+
 use proxmox_backup::{
-    api2::types::{Kdf, KeyInfo, RsaPubKeyInfo, PASSWORD_HINT_SCHEMA},
+    api2::types::{RsaPubKeyInfo, PASSWORD_HINT_SCHEMA},
     backup::{rsa_decrypt_key_config, KeyConfig},
     tools,
     tools::paperkey::{generate_paper_key, PaperkeyFormat},