Package modularized smart contracts service to be consumable

[lukelee-sl]

Problem

The smart contracts service module is not currently in a state where it can be easily consumed by other applications (e.g the mirror node). One consequence of this is that new functionality in system contracts is not currently available when calling the mirror node.

Solution

Refactor the codebase to enable easy consumption of the smart contracts module by other applications.

Alternatives

No response