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

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

proxmox-rest-server/src/lib.rs

@@ -5,6 +5,7 @@ use anyhow::{bail, format_err, Error};
 use proxmox::tools::fd::Fd;
 
 pub mod daemon;
+pub mod formatter;
 
 mod environment;
 pub use environment::*;