RPC File support

[BleedingDev]

What is the problem this feature would solve?

There's no solution that allows type-safe RPC and allows non-JSON input (e.g. XML, files, ...), this would give EffectTS huge advantage over alternatives.

What is the feature you are proposing to solve the problem?

Support non-JSON input in RPC.

What alternatives have you considered?

Using Next.js server actions is my current solution.