Create windows_11_trainer_install.md

Author: Abe404

docs/windows_11_trainer_install.md

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+# Installing the RootPainter trainer (server) on windows 11.
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+1. Open powershell as administrator
+2. Set-ExecutionPolicy -ExecutionPolicy RemoteSigned
+3. Invoke-WebRequest -UseBasicParsing -Uri "https://raw.githubusercontent.com/pyenv-win/pyenv-win/master/pyenv-win/install-pyenv-win.ps1" -OutFile "./install-pyenv-win.ps1"; &"./install-pyenv-win.ps1"
+4. Close and reopen powershell as administrator.
+5. pyenv install 3.10.11
+6. pyenv global 3.10.11
+7. pyenv version 
+8. python -c "import sys; print(sys.executable)"
+9. cd Desktop
+10. pip install torch==1.13.1+cu117 torchvision==0.14.1+cu117 --index-url https://download.pytorch.org/whl/cu117
+11. pip install root-painter-trainer
+12. start-trainer
+13. You will be prompted to input the RootPainter Sync directory. You can just type root_painter_sync and press enter.
+14. The trainer should now be running and it should tell you your batch size (should be above 0) and if the GPU is available or not (It should say True).