Add extracted tools: CitrineOS, OpenOCPP, ShapeShifter

- CitrineOS core extracted (CSMS OCPP 2.0.1)
- OpenOCPP extracted (firmware OCPP 1.6J/2.0.1)
- ShapeShifter library installed (pip install -e)
- ShapeShifter specification extracted
- EVerest extracted

TODO updated with progress

tools/EVerest-main/modules/EVSE/EvseV2G/tests/tools_test.cpp

@@ -0,0 +1,36 @@
+// SPDX-License-Identifier: Apache-2.0
+// Copyright Pionix GmbH and Contributors to EVerest
+#include <gtest/gtest.h>
+#include <tools.hpp>
+
+namespace {
+
+template <typename T, std::size_t S> constexpr auto macStr(const T (&arg)[S]) {
+    return to_mac_address_str(reinterpret_cast<const uint8_t*>(arg), S - 1);
+}
+
+TEST(to_mac_address_str, various) {
+    auto result = to_mac_address_str(nullptr, 0);
+    EXPECT_TRUE(result.empty());
+    const char* txt = "123";
+    result = to_mac_address_str(reinterpret_cast<const uint8_t*>(txt), 0);
+    EXPECT_TRUE(result.empty());
+
+    result = macStr("");
+    EXPECT_TRUE(result.empty());
+    result = macStr("12345678901234567"); // too long
+    EXPECT_TRUE(result.empty());
+
+    result = macStr("A");
+    EXPECT_EQ(result, "41");
+    result = macStr("AB");
+    EXPECT_EQ(result, "41:42");
+    result = macStr("ABM");
+    EXPECT_EQ(result, "41:42:4D");
+    result = macStr("\xac\x91\xa1\x56\x5f\x46");
+    EXPECT_EQ(result, "AC:91:A1:56:5F:46");
+    result = macStr("1234567890123456"); // max length
+    EXPECT_EQ(result, "31:32:33:34:35:36:37:38:39:30:31:32:33:34:35:36");
+}
+
+} // namespace