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/ocpp/doc/common/getting_started.md

@@ -0,0 +1,72 @@
+# Getting Started
+
+## Requirements
+
+For Debian GNU/Linux 11 you will need the following dependencies:
+
+```bash
+  sudo apt install build-essential cmake python3-pip libboost-all-dev libsqlite3-dev libssl-dev
+```
+
+OpenSSL version 3.0 or above is required.
+
+Clone this repository.
+
+```bash
+  git clone https://github.com/EVerest/libocpp
+```
+
+In the libocpp folder create a folder named build and cd into it.
+Execute cmake and then make:
+
+```bash
+  mkdir build && cd build
+  cmake ..
+  make -j$(nproc)
+```
+
+## Unit testing
+
+GTest is required for building the test cases target.
+To build the target and run the tests you can reference the script `.ci/build-kit/install_and_test.sh`.
+The script allows the GitHub Actions runner to execute.
+
+Local testing:
+
+```bash
+mkdir build
+cmake -B build -DBUILD_TESTING=ON -DCMAKE_BUILD_TYPE=Debug -DCMAKE_INSTALL_PREFIX="./dist"
+cd build
+make -j$(nproc) install
+```
+
+Run any required tests from build/tests.
+
+## Clarifications for directory structures, namespaces and OCPP versions
+
+This repository contains multiple subdirectories and namespaces named v16, v2 and v21.
+
+* The v16 directories contain files for configuring and implementing OCPP 1.6.
+* The v2 directories include files for both OCPP2.0.1 and OCPP2.1, as OCPP 2.1
+is fully backward compatible with OCPP 2.0.1.
+* The v21 directories include files only for OCPP2.1.
+
+## Get Started with OCPP1.6
+
+Please see the [Getting Started documentation for OCPP1.6](../v16/getting_started.md).
+
+## Get Started with OCPP2.0.1
+
+Please see the [Getting Started documentation for OCPP2.0.1](../v2/getting_started.md).
+
+## Building the doxygen documentation
+
+```bash
+  cmake -S . -B build
+  cmake --build build --target doxygen-ocpp
+```
+
+You will find the generated doxygen documentation at:
+`build/dist/docs/html/index.html`
+
+The main reference for the integration of libocpp for OCPP1.6 is the ocpp::v16::ChargePoint class defined in `v16/charge_point.hpp` , for OCPP2.0.1 and OCPP2.1 that is the ocpp::v2::ChargePoint class defined in `v2/charge_point.hpp` .