Add docstrings to all public package

src/openflexure_microscope_server/things/__init__.py

@@ -0,0 +1,5 @@
+"""A package for all of the core LabThings-FastAPI Things shipped with the microscope.
+
+The microscope can be extended to be used with other hardware by creating a package
+with other Things and including them in the LabThings-FastAPI config file.
+"""

src/openflexure_microscope_server/things/stage/__init__.py

@@ -1,3 +1,14 @@
+"""A package for stage control Things.
+
+`BaseStage` is the base class that provides core stage functionality, but
+no hardware interface control. To create a stage Thing to control a specific
+piece of hardware the BaseStage should be subclassed, and any method raising
+a NotImplementedError should be created.
+
+As the object will be used as a context manager create the hardware connection in
+``__enter__`` (not in ``__init__``), and close the connection with ``__exit__``.
+"""
+
 from __future__ import annotations
 from collections.abc import Sequence, Mapping