feat: solid-js adapter

[wobsoriano]

This PR:

• Adds initial implementation of the Solid adapter
• Adds initial tests for the Solid adapter

Note: I am having some issues trying to replicate tests from the React and Vue adapters. For some reason, it's not rendering the component you pass in the render function from @solidjs/testing-library. As an alternative, the same module offers a renderHook function which lets us easily test a hook / primitive.

Closes #5

[crutchcorn]

This is awesome! Apologies for the delay on my end. Merging and publishing now

[wobsoriano]

Thank you for checking this out. I appreciate it @crutchcorn.