other: Move cbor, jsmn and libsodium to idf-component-manager

Marginal components are being carved out from esp-idf and moved to
https://github.com/espressif/idf-extra-components.
They are distributed via idf-component-manager, see
https://components.espressif.com.

components/mbedtls/test/test_mbedtls_utils.c

@@ -0,0 +1,30 @@
+/*
+ * SPDX-FileCopyrightText: 2021 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include <stdlib.h>
+#include <stdint.h>
+#include "test_mbedtls_utils.h"
+
+static inline char to_hex_digit(unsigned val)
+{
+    return (val < 10) ? ('0' + val) : ('a' + val - 10);
+}
+
+
+void utils_bin2hex(char *const hex, const size_t hex_maxlen, const unsigned char *const bin, const size_t bin_len)
+{
+    assert(bin_len < SIZE_MAX / 2);
+    assert(hex_maxlen > bin_len * 2U);
+    assert(hex);
+    assert(bin);
+
+    int i;
+    for (i = 0; i < bin_len; i++) {
+        hex[2*i] = to_hex_digit(bin[i] >> 4);
+        hex[2*i + 1] = to_hex_digit(bin[i] & 0xf);
+    }
+    hex[i * 2U] = 0U;
+}