New tee type: CCA (Confidential Compute Architecture)

Signed-off-by: Dave Chen <dave.chen@arm.com>

Author: chendave

src/lib.rs

@@ -15,6 +15,8 @@ pub enum Tee {
     Sgx,
     Snp,
     Tdx,
+    // Arm Confidential Compute Architecture
+    Cca,
 
     // This value is only used for testing an attestation server, and should not
     // be used in an actual attestation scenario.