Refactor Code for Osprey Data layer

[arun-esh]

Build up the Object Oriented Design to accommodate the easy processing for multiple languages, models, and other features which might be helpful in the future.

About data files:

There are two files:

• has messages of conversations
• has the information about the Predator

Get the idea by reading the files we discussed. Here is the brief idea what is required.

Object Oriented Design

There are mainly two entities we discussed:

• messages
• conversations (has messages object as an attribute)

Some methods required:

• loader (to load the data from path given as argument)
• translate (to translate the text to target language provided as an argument)

[arun-esh]

@hosseinfani Please assign this issue to me.