Clean up codebase to match SDK uniformity

[sneakzttv]

Similar to EVM and Gelato tickets #1016 & #1000, cleaning up classes and moving them to services to match SDK uniformity. As these are similar in nature they can all be done at once to alleviate QA's workload.

Definition Of Done:

• Evm service complete.
• Gelato service complete.
• Marketplace service complete.
• Old ABI class removed.
• All tests & samples passing.

[sneakzttv]

I'm going to be super busy next week with b3 & marketplace sample, asking olek if he can take over on this one. If he's busy, I will pick it up later.

[sneakzttv]

He's busy too, ill jump back on this when i can.