[FEATURE] Implementing Abstract Base Class for future model additions in ml_models

[rawwar]

Is your feature request related to a problem?
Since, we want to support multiple types of models, we can standardize this by having a abstract base class.

What solution would you like?
I would like to introduce an abstract base class that encapsulates the common functionality shared by different model classes. This would promote code reusability and provide a consistent interface for all derived classes.

Do you have any additional context?
This change would affect the SentenceTransformerModel class and Q&A model that's work in progress. We would need to refactor these classes to inherit from the new abstract base class.

[dhrubo-os]

that's good idea!

[dblock]

Catch All Triage - 1 2 3 4 5

@rawwar any interest in picking this up?