* Change the build dir for cpp samples
* Add info about `-sample-options` to the help message
* Use `python -m pip` instead of `pip3`
* Add the line of code to update pip
* Update help messages
* Add python venv creation
* Use `model-optimizer/requirements.txt` instead of `install_prerequisites.bat`
* [demo_benchmark_app.bat] Update the help message
* [demo_benchmark_app.bat] Add venv creation
* [demo_benchmark_app.bat] Replace model_optimizer prerequisites with the requirements.txt
* Change the venv location
* Remove the mention of FPGA from the help message
* Fix venv folder path
* Change venv folder to `venv_openvino`
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