Define and document required python control interface to the telescope

This enabler should identify the key functions required by the users of the PSIs, ITFs and AA0.5 and  document how the telescope systems provide these to a user via a python command line interface (API).  In this process any missing and required functionality should also be identified so that follow up features can implement it.

In addition to the users the API should form the callable interface required by OET observing scripts.

Much of the documentation for existing systems should already be available via readthedocs - the aim is to streamline the user experience in finding the documentation and understanding how to use the commands.

Care should be taken in drafting the documentation so that it concentrates on SKA specifics and does not unnecessarily repeat existing pyTANGO documentation.

Notes:

1. This enabler overlaps with SP-2761 and SP-2718.
2. The documents available at https://confluence.skatelescope.org/display/SST/AA0.5+Scenarios provide insight into the science commissioning needs.
3. The internal ICD between OET and TMC is also background reference information (SKA-TEL-TM-0000297).