Add hello world example

[Hadatko]

Pull request

Choose Correct

• [ ] bug
• [X] feature

Describe the pull request

Introduction of basic example for C, C++, Python

To Reproduce

Expected behavior

Every client can communicate with every server

Screenshots

Desktop (please complete the following information):

• OS:
• eRPC Version:

Steps you didn't forgot to do

• [x] I checked if other PR isn't solving this issue.
• [x] I read Contribution details and did appropriate actions.
• [ ] PR code is tested.
• [ ] PR code is formatted.
• [X] Allow edits from maintainers pull request option is set (recommended).

Additional context

[Hadatko]

Hi @MichalPrincNXP , this PR is not ready as makefiles for C/C++ examples are missing. But i wanted show you how the examples can be created and wanted know your opinion. I would like to add example for arbitrator and callbacks and maybe some example for different datatypes...

[JanKomarekNXP]

Hello @Hadatko, after a discussion with @MichalPrincNXP I have made some changes to this PR on the new branch. I hope you don't mind. I added more features to the basic hello_world example and would like your opinion.

The changes include:

• The hello_world example for C/C++/Python/Java
• Basic support for CMake. This allows for the generation of erpcgen, C/C++ examples, and tests.
• Matrix multiplication example for C/C++.

I have tested the CMake on Windows with msys64 and mingw64 (locally downloaded with the install_dependecied.sh/ps1 to the erpc directory) and on Linux using make and ninja.

There is still work to be done, but I would like to hear your thoughts.