Update CMake lists

Author: Lukasa

Sources/_CryptoExtras/CMakeLists.txt

@@ -65,6 +65,10 @@ add_library(_CryptoExtras
   "Util/PEMDocument.swift"
   "Util/PrettyBytes.swift"
   "Util/SubjectPublicKeyInfo.swift"
+  "Util/ThreadSpecific/ThreadOps.swift"
+  "Util/ThreadSpecific/ThreadPosix.swift"
+  "Util/ThreadSpecific/ThreadSpecific.swift"
+  "Util/ThreadSpecific/ThreadWindows.swift"
   "ZKPs/DLEQ.swift"
   "ZKPs/Prover.swift"
   "ZKPs/Verifier.swift"