Fix postgresql array types parsing

[FabienHenon]

When I use an array field in PostgreSQL I receive records as strings like this: {1,2,3} instead of Elixir arrays.

This PR aims to cast correctly float, integer and string arrays (handling quoted strings and unquoted strings).

[cpursley]

@FabienHenon ~ I took the liberty to extend your work and refactor all the type casting stuff, borrowing from Supabase realtime and Sequin: #85

Could you review this against your codebase if you can a moment?

[FabienHenon]

@FabienHenon ~ I took the liberty to extend your work and refactor all the type casting stuff, borrowing from Supabase realtime and Sequin: #85

Could you review this against your codebase if you can a moment?

Sure!
I’m on holidays at the moment, but as soon as I have a moment I’ll review your refactor

[cpursley]

Enjoy your time off. I'm going to go ahead and cut a release and let me know when you're back and we can refine if necessary.

[FabienHenon]

Enjoy your time off. I'm going to go ahead and cut a release and let me know when you're back and we can refine if necessary.

I had some time to check and eveything is fine!

Thank you!