[Windows] Create setup dev env BAT script

@echo off
rem Install dev environment and requirements.

call envvars.bat

%PYTHON% -m venv %WORKSPACE_DRIVE%\venv

%WORKSPACE_DRIVE%\venv\Scripts\activate

python -m pip install -r %WORKSPACE_DRIVE%\tools\deps\requirements-dev.txt -r %WORKSPACE_DRIVE%\tools\deps\requirements-pip.txt -r %WORKSPACE_DRIVE%\tools\deps\requirements-tests.txt -r %WORKSPACE_DRIVE%\tools\deps\requirements-tox.txt --upgrade-strategy=only-if-needed