feat: compat code for non x86_64-linux

- do not build packages, which require `x86_64-linux`
- use Phala `dcap-qvl` crate for remote attestation, if possible
- nix: exclude `nixsgx` on non `x86_64-linux` platforms

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

crates/teepot/Cargo.toml

@@ -10,6 +10,15 @@ edition.workspace = true
 authors.workspace = true
 repository.workspace = true
 
+[target.'cfg(all(target_os = "linux", target_arch = "x86_64"))'.dependencies]
+tdx-attest-rs = { version = "0.1.2", git = "https://github.com/intel/SGXDataCenterAttestationPrimitives.git", rev = "aa239d25a437a28f3f4de92c38f5b6809faac842" }
+teepot-tee-quote-verification-rs = { path = "../teepot-tee-quote-verification-rs" }
+
+[target.'cfg(not(all(target_os = "linux", target_arch = "x86_64")))'.dependencies]
+dcap-qvl = "0.2.3"
+chrono = "0.4.40"
+bytes.workspace = true
+
 [dependencies]
 anyhow.workspace = true
 async-trait.workspace = true
@@ -18,9 +27,9 @@ clap.workspace = true
 config.workspace = true
 const-oid.workspace = true
 enumset.workspace = true
+futures = "0.3.31"
 getrandom.workspace = true
 hex.workspace = true
-intel-tee-quote-verification-rs.workspace = true
 num-integer.workspace = true
 num-traits.workspace = true
 opentelemetry.workspace = true
@@ -39,8 +48,8 @@ serde_json.workspace = true
 sha2.workspace = true
 sha3.workspace = true
 signature.workspace = true
-tdx-attest-rs.workspace = true
 thiserror.workspace = true
+tokio.workspace = true
 tracing.workspace = true
 tracing-futures.workspace = true
 tracing-log.workspace = true