[Feature] Possible addition of the repository and service pattern

[Caixetadev]

Is your feature request related to a problem? Please describe.

handlers are coupled with the database and business rules

Describe the solution you'd like

implement the patterns

service
repository

Describe alternatives you've considered

Additional context

[kevinanielsen]

I like this a lot - Would you like to work on this?

[Caixetadev]

Yes

[anveshthakur]

Hi @kevinanielsen, I was going through this issue and made a the necessary changes related for implementing the repository pattern for this you can check it over here. #141