Added Python 3.12 support.

Merge junit files.
Merge coverage files.
Extending UnitTesting to support code coverage in a matrix too.

doc/_templates/autoapi/package.rst

@@ -0,0 +1,14 @@
+.. # Template created by Patrick Lehmann
+
+Python Class Reference
+######################
+
+Reference of all packages and modules:
+
+.. automodule:: {{ node.name }}
+
+.. toctree::
+   :maxdepth: 1
+{% for item in subnodes %}
+   {{ item.name }}
+{%- endfor %}