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/src/client/mod.rs

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
-// Copyright (c) 2023-2024 Matter Labs
+// Copyright (c) 2023-2025 Matter Labs
 
 //! Helper functions for CLI clients to verify Intel SGX enclaves and other TEEs.
 
@@ -25,11 +25,12 @@ use rustls::{
 };
 use sha2::{Digest, Sha256};
 use std::{sync::Arc, time, time::Duration};
-use teepot::{quote::Report, sgx::Quote};
 pub use teepot::{
+    quote::tcblevel::{parse_tcb_levels, EnumSet, TcbLevel},
     quote::{verify_quote_with_collateral, QuoteVerificationResult},
-    sgx::{parse_tcb_levels, sgx_ql_qv_result_t, EnumSet, TcbLevel},
+    sgx::sgx_ql_qv_result_t,
 };
+use teepot::{quote::Report, sgx::Quote};
 use tracing::{debug, error, info, trace, warn};
 use x509_cert::{
     der::{Decode as _, Encode as _},

crates/teepot-vault/src/client/vault.rs

@@ -30,10 +30,11 @@ use std::{
 };
 use teepot::quote::error::QuoteContext;
 pub use teepot::{
-    quote::{verify_quote_with_collateral, QuoteVerificationResult},
-    sgx::{
-        parse_tcb_levels, sgx_gramine_get_quote, sgx_ql_qv_result_t, Collateral, EnumSet, TcbLevel,
+    quote::{
+        tcblevel::{parse_tcb_levels, EnumSet, TcbLevel},
+        verify_quote_with_collateral, QuoteVerificationResult,
     },
+    sgx::{sgx_gramine_get_quote, sgx_ql_qv_result_t, Collateral},
 };
 use tracing::{debug, error, info, trace};
 

crates/teepot-vault/src/server/attestation.rs

@@ -9,10 +9,13 @@ use serde::{Deserialize, Serialize};
 
 pub use teepot::{
     quote::{
-        attestation::get_quote_and_collateral, error::QuoteContext, get_quote,
+        attestation::get_quote_and_collateral,
+        error::QuoteContext,
+        get_quote,
+        tcblevel::{parse_tcb_levels, EnumSet, TcbLevel},
         verify_quote_with_collateral, QuoteVerificationResult,
     },
-    sgx::{parse_tcb_levels, Collateral, EnumSet, TcbLevel},
+    sgx::Collateral,
 };
 
 /// Options and arguments needed to attest a TEE