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/EvseManager/backtrace.cpp

@@ -0,0 +1,47 @@
+// SPDX-License-Identifier: Apache-2.0
+// Copyright Pionix GmbH and Contributors to EVerest
+
+#include "backtrace.hpp"
+
+#ifdef EVEREST_USE_BACKTRACES
+
+#include <cstring>
+#include <execinfo.h>
+#include <stdio.h>
+#include <unistd.h>
+
+/*
+ Simple backtrace signal handler
+*/
+namespace Everest {
+
+void signal_handler(int signo) {
+    void* array[10];
+    size_t size;
+
+    // get void*'s for all entries on the stack
+    size = backtrace(array, 10);
+
+    // print out all the frames to stderr
+    printf("\n---------------------------------------------------------------------------------------------------\n");
+    backtrace_symbols_fd(array, size, STDOUT_FILENO);
+    printf("---------------------------------------------------------------------------------------------------\n\n");
+}
+
+void install_backtrace_handler() {
+    struct sigaction bt_handler;
+    memset(&bt_handler, 0, sizeof(bt_handler));
+
+    bt_handler.sa_handler = signal_handler;
+
+    if (sigaction(SIGUSR1, &bt_handler, NULL) < 0) {
+        perror("sigaction");
+    }
+}
+
+void request_backtrace(pthread_t id) {
+    pthread_kill(id, SIGUSR1);
+}
+
+} // namespace Everest
+#endif