tools: add find pyenv path on windows

PR-URL: #54314
Reviewed-By: Yagiz Nizipli <yagiz@nizipli.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Chengzhong Wu <legendecas@gmail.com>

tools/msvs/find_python.cmd

@@ -17,6 +17,13 @@ for %%k in ( "HKCU\Software", "HKLM\SOFTWARE", "HKLM\Software\Wow6432Node") do (
   if not errorlevel 1 goto :found-python
 )
 
+:: Check for pyenv-win installation using pyenv which python
+for /f "tokens=*" %%i in ('pyenv which python 2^>nul') do set p=%%i
+if defined p (
+    for /f "tokens=*" %%j in ('"%p%" --version') do set python_version=%%j
+    goto :found-python
+)
+
 goto :no-python