Allow entry_point in WASM compile

[kobyhallx]

Problem

As a Developer
I would like to specify entry_point as a compilation option
so that the default noir-source-resolver could be used on NodeJS

Proposed solution

Allow entry_point parameter to compilation options.

Alternatives considered

Relying on specifying source resolver each time allows resolving sources from different locations.

Additional context

No response

[jfecher]

We could also consider a #[entry_point] directive to specify this in the source code if applicable.
Or if naming is the issue, we could consider automatically renaming main based on the backend.