refactor(quote): move TCB level logic to a dedicated module

- Extracted `TcbLevel` functionality from `sgx` module to `quote::tcblevel`.
- Updated all references to import `TcbLevel` and related utilities from `quote::tcblevel`.
- Updated copyright headers to reflect the new year range.

Signed-off-by: Harald Hoyer <harald@matterlabs.dev>

crates/teepot-vault/bin/tee-vault-admin/src/main.rs

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-// Copyright (c) 2023-2024 Matter Labs
+// Copyright (c) 2023-2025 Matter Labs
 
 //! Server to handle requests to the Vault TEE
 
@@ -17,7 +17,7 @@ use digest::get_digest;
 use rustls::ServerConfig;
 use sign::post_sign;
 use std::{net::Ipv6Addr, sync::Arc};
-use teepot::sgx::{parse_tcb_levels, EnumSet, TcbLevel};
+use teepot::quote::tcblevel::{parse_tcb_levels, EnumSet, TcbLevel};
 use teepot_vault::{
     json::http::{SignRequest, VaultCommandRequest, DIGEST_URL},
     server::{