fix(tee): update TEE provider handling and add serde support

- Simplified provider retrieval in TEE implementation.
- Enhanced TeeProviderType with serialization and deserialization capabilities.
- Added serde as a dependency for serialization support.

Author: steebchen

Cargo.lock

@@ -76,10 +76,7 @@ where
         debug!(target: "rpc::tee", "Generating TEE attestation quote");
 
         // Get the latest blockchain state
-        let provider = self
-            .provider_factory
-            .provider()
-            .map_err(|e| TeeApiError::ProviderError(e.to_string()))?;
+        let provider = self.provider_factory.provider();
 
         // Get latest block information
         let block_number =

crates/rpc/rpc-server/src/tee.rs

@@ -6,6 +6,7 @@ version.workspace = true
 
 [dependencies]
 thiserror.workspace = true
+serde.workspace = true
 tracing = { workspace = true, optional = true }
 bincode = { workspace = true, optional = true }
 sev-snp = { workspace = true, optional = true }

crates/tee/Cargo.toml

@@ -39,7 +39,7 @@ pub use snp::SevSnpProvider;
 /// TEE provider type enumeration.
 ///
 /// Currently only SEV-SNP is supported for production use.
-#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+#[derive(Debug, Clone, Copy, PartialEq, Eq, serde::Serialize, serde::Deserialize)]
 pub enum TeeProviderType {
     /// AMD SEV-SNP provider.
     SevSnp,