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/Evse15118D20/extensions/iso15118_extensionsImpl.cpp

@@ -0,0 +1,21 @@
+// SPDX-License-Identifier: Apache-2.0
+// Copyright Pionix GmbH and Contributors to EVerest
+
+#include "iso15118_extensionsImpl.hpp"
+
+namespace module {
+namespace extensions {
+
+void iso15118_extensionsImpl::init() {
+}
+
+void iso15118_extensionsImpl::ready() {
+}
+
+void iso15118_extensionsImpl::handle_set_get_certificate_response(
+    types::iso15118::ResponseExiStreamStatus& certificate_response) {
+    // your code for cmd set_get_certificate_response goes here
+}
+
+} // namespace extensions
+} // namespace module