windows is python and not python3

[River-Mochi]

To Reproduce
Steps to reproduce the behaviour:

1. just installed Source-all v 1.12.8 on windows 11
2. setup-dev.bat file is made for Windows terminal users yet it calls for python3 and not python
   this causes error messages and for it to not execute correctly.
3. on Windows installs, all python will be simply python and not python3 which does not exist
4. only way I can get this script to work is to manually remove the "3" from all locations in the script.
5. this might be one real reason some people have issues getting Pinesam to run on Windows, not the install of python on windows but that the setup-dev.bat is calling for a command name that does not exists.

Issues with script are highlighted

Alias's can be made in windows to point python3 names to python but making users do that it's a lot of extra work and confusing steps for windows users. also if they don't do it certain way then it's not persistent, it's really easier to just call it Python and not python3 (since python3 does not exist in Windows).

see screenshot, on Windows Python will be installed as simply "python" the Terminal Powershell and also Command will not know what "python3" is since this command does not exist.

[River-Mochi]

After removing all the "3" from the setup-dev.bat and running it again in Windows Powershell terminal, it correctly checks for python things now but still has a couple other warnings and errors not related to python ( a lot less after I removed all the "python3" references in setup-dev.bat).

[River-Mochi]

Closed as fixed with update #128