docs: added auto-generation of documentation

ref: N25B-270

README.md

@@ -63,3 +63,25 @@ git config --local --unset core.hooksPath
 ```
 
 Then run the pre-commit install commands again.
+
+## Documentation
+Generate documentation web pages using:
+
+```bash
+PYTHONPATH=src sphinx-apidoc -F -o docs src/control_backend
+```
+
+Optionally, in the `conf.py` file in the new `docs` folder, change preferences. 
+For the page theme, change `html_theme` to `'sphinx_rtd_theme'`.
+
+In the `docs` folder:
+
+### Windows
+```bash
+.\make.bat html
+```
+
+### MacOS
+```bash
+make html
+```