Thoroughly think about type stability and improved abstractions

[smishr]

To utilise Julian optimisations, we should rethink some aspects of the current codebase for improving type stability.

I think a discussion around type hierarchy to improve modularity in code would be great as well, which promotes code reuse, and easy addition/integration of future features.

Thinking along lines of #290 #277

Ref

Julia manual performance tips
Writing type stable Julia code

[smishr]

@ayushpatnaikgit @asinghvi17 @codetalker7