Add Python into user PATH [Feature request]

[buzzer-re]

The current version does not add Python to the PATH variable, also if one types only python.exe a MS store pop-up will open, so it's good to remove the python.exe wrapper that MS uses to open the store.

del %localappdata%\Microsoft\WindowsApps\python.exe

The same also happen if type python3.exe and python3.7.