AST-933 Add sphinx documentation

This builds sphinx documentation for a subset of C++ classes and python classes. The python documentation is not as complete as the C++ documentation, there will be a follow-up MR to fix that.

docker/ubuntu_22_04_base

@@ -42,5 +42,5 @@ RUN python3 -m pip install \
         pytest \
         pytest-lazy-fixture \
         sphinx \
-        spinx_rtd_theme \
+        sphinx_rtd_theme \
     ;