[yunq] Add codegen for clients and servers (untested).

yunq/example.yunq.client.h

@@ -0,0 +1,18 @@
+// Generated file - DO NOT MODIFY
+#pragma once
+
+#include <ztypes.h>
+
+#include "example.yunq.h"
+
+class VFSClient {
+ public:
+  VFSClient(z_cap_t VFS_cap) : endpoint_(VFS_cap) {}
+  VFSClient(const VFSClient&) = delete;
+  VFSClient(VFSClient&&) = delete;
+
+  [[nodiscard]] glcr::ErrorCode open(const OpenFileRequest& request, File& response);
+
+ private:
+  z_cap_t endpoint_;
+};