Enable operators to upload and use static input data in pipelines

Inputs for testing real-time pipelines are collected and made available in the appropriate repositories.   [ YANDA ] An investigation of typical sky models was undertaken and examination of the current requirements for AA0.5. A JSON representation of the GLEAM all-sky model has been added to the telmodel data repository together a schema and the associated validation tests. This is not considered the complete solution to this problem - but has started a discussion on the form the sky model representations should take. More features in subsequent PIs are expected to further develop this A HDF5 representation of a static RFI model was also added to the data repository to meet the needs of ORCA. [ YAN-1617, YAN-1618, YAN-1628 ]   Real-time pipelines use the telescope model library to retrieve these data. [ ORCA ] The pointing offset calibration pipeline has been updated to read static RFI mask data from the Telescope Model Data Repository. We tested it with the data file uploaded by Yanda (currently on a branch ): MR69   We also updated the pointing-offset script to determine the location of the RFI mask buy implementing the use of the `telescope_model` parameter: MR118 , MR120