Added framework as a flattened directory

Signed-off-by: Minos Galanakis <minos.galanakis@arm.com>

framework/tests/include/test/arguments.h

@@ -0,0 +1,26 @@
+/**
+ * \file arguments.h
+ *
+ * \brief Manipulation of test arguments.
+ *
+ * Much of the code is in host_test.function, to be migrated here later.
+ */
+
+/*
+ *  Copyright The Mbed TLS Contributors
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
+ */
+
+#ifndef TEST_ARGUMENTS_H
+#define TEST_ARGUMENTS_H
+
+#include "mbedtls/build_info.h"
+#include <stdint.h>
+#include <stdlib.h>
+
+typedef union {
+    size_t len;
+    intmax_t sint;
+} mbedtls_test_argument_t;
+
+#endif /* TEST_ARGUMENTS_H */