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/helpers/src/coverage.cpp

@@ -0,0 +1,41 @@
+// SPDX-License-Identifier: Apache-2.0
+// Copyright Pionix GmbH and Contributors to EVerest
+
+#include <everest/helpers/coverage.hpp>
+
+#include <atomic>
+
+#include <signal.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+extern "C" void __gcov_dump();
+
+namespace {
+
+static std::atomic_flag going_to_terminate = ATOMIC_FLAG_INIT;
+
+void terminate_handler(int signal) {
+    if (going_to_terminate.test_and_set()) {
+        return;
+    }
+
+    __gcov_dump();
+
+    _exit(EXIT_FAILURE);
+};
+
+} // namespace
+
+namespace everest::helpers {
+
+void install_signal_handlers_for_gcov() {
+    struct sigaction action {};
+    action.sa_handler = &terminate_handler;
+    // action.sa_mask should be zero, so no blocked signals within the signal handler
+    // action.sa_flags should be fine with being zero
+    sigaction(SIGINT, &action, nullptr);
+    sigaction(SIGTERM, &action, nullptr);
+}
+
+} // namespace everest::helpers