Add Chromium-only Blender WebEngine parity work

blender-5.2.0/build_files/windows/doc_py.cmd

@@ -0,0 +1,34 @@
+set SOURCEDIR=%BLENDER_DIR%/doc/python_api/sphinx-in
+set BUILDDIR=%BLENDER_DIR%/doc/python_api/sphinx-out
+if "%BF_LANG%" == "" set BF_LANG=en
+set SPHINXOPTS=-j auto -D language=%BF_LANG%
+
+call "%~dp0\find_sphinx.cmd"
+
+if EXIST "%SPHINX_BIN%" (
+    goto detect_sphinx_done
+)
+
+echo unable to locate sphinx-build, run "set sphinx_BIN=full_path_to_sphinx-build.exe"
+exit /b 1
+
+:detect_sphinx_done
+
+call "%~dp0\find_blender.cmd"
+
+if EXIST "%BLENDER_BIN%" (
+    goto detect_blender_done
+)
+
+echo unable to locate blender, run "set BLENDER_BIN=full_path_to_blender.exe"
+exit /b 1
+
+:detect_blender_done
+
+%BLENDER_BIN% ^
+	--background --factory-startup ^
+	--python %BLENDER_DIR%/doc/python_api/sphinx_doc_gen.py
+
+"%SPHINX_BIN%" -b html %SPHINXOPTS% %O% %SOURCEDIR% %BUILDDIR%
+
+:EOF