[REFACTOR]: Use `OkHttp` and `Moshi`

[Qubik65536]

Please choose if applies:

• I'm currently working on adding this feature.

Describe the solution you'd like

We want to refactor so that:

• Use OkHttp as HTTP Client / Engine for Ktor Client
• Use Moshi as the JSON library (Might not happen, TBD)

NOTE:
These migrations might takes time to complete and we might have to use both old and new libraries during the transition.

Some useful reference:

• https://square.github.io/okhttp/recipes/#parse-a-json-response-with-moshi-kt-java

Describe alternatives you've considered

No response

Anything else?

No response

Please accept these terms

• I have searched the existing issues and this has not been posted before