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/lib/everest/framework/include/utils/thread.hpp

@@ -0,0 +1,26 @@
+// SPDX-License-Identifier: Apache-2.0
+// Copyright 2020 - 2021 Pionix GmbH and Contributors to EVerest
+#ifndef UTILS_THREAD_HPP
+#define UTILS_THREAD_HPP
+
+#include <chrono>
+#include <future>
+#include <thread>
+
+namespace Everest {
+class Thread {
+public:
+    ~Thread();
+
+    void stop();
+
+    bool shouldExit();
+    Thread& operator=(std::thread&&);
+
+private:
+    std::thread handle;
+    std::atomic_bool exit_signal{false};
+};
+} // namespace Everest
+
+#endif // UTILS_THREAD_HPP