Add cross-platform tests for libmetal

To-be-expanded suite of tests for libmetal using
system-agnostic API instead of system specific tests.

Signed-off-by: Lefteris Ntafotis <lntaf@ics.forth.gr>

test/config.c

@@ -0,0 +1,33 @@
+/*
+ * Copyright (c) 2025, CARV ICS FORTH.
+ *
+ * SPDX-License-Identifier:    BSD-3-Clause
+ */
+
+/*
+ * @file		config.c
+ * @brief		Cross-platform tests for config interface
+ */
+
+#include <metal/sys.h>
+#include <metal/log.h>
+#include <metal/config.h>
+
+int test_config(void)
+{
+	struct metal_init_params metal_param = METAL_INIT_DEFAULTS;
+
+	metal_init(&metal_param);
+	metal_set_log_handler(metal_default_log_handler);
+	metal_set_log_level(METAL_LOG_INFO);
+
+	metal_info("Metal version: %d.%d.%d\n", METAL_VER_MAJOR, METAL_VER_MINOR, METAL_VER_PATCH);
+	metal_info("In string form: %s\n", METAL_VER);
+
+	metal_info("Metal system identifies as: %s\n", METAL_SYSTEM);
+	metal_info("Metal processor identifies as: %s\n", METAL_PROCESSOR);
+	metal_info("Metal machine identifies as: %s\n", METAL_MACHINE);
+
+	metal_finish();
+	return 0;
+}