Provide input table from SAS dataset

[SundareshSankaran]

Now that pandas data frame is a supported input data source, we will extend functionality further to include an option to specify either a SAS dataset or a CAS table as a data source.

Why? Given the main objective of providing tools which make it easier to integrate LLMs into the Viya ecosystem, this is a natural direction to go towards. Data in the Viya ecosystem resides in SAS datasets, CAS tables or sources from databases and external data sources, manifested either as a SAS dataset or CAS table.

How?

• An input data source will be added to the custom step
• Code will convert input dataset to pandas data frame
• Pandas data frame will be stored to Chroma vector store
• Rest of the process will run as normal

[SundareshSankaran]

July 2 : Added UI control and updated About tab with simplest use case (SAS dataset)