feat: classify jsonc and json5 modules

[nayeemrmn]

• For Consider supporting importing files as jsonc / json5 deno#20374

This generalises JSON module slots to any 'independent' or dependency-less text modules.

[bartlomieju]

I think now might be the time to address this? @dsherret?

[dsherret]

It would be good to move this code out of deno_graph and into the cli crate so it can be made stable there and then we can start doing more drastic changes to deno_graph.

[dsherret]

LGTM. Maybe we should only support json5 and not bother with having an additional jsonc attribute though?

Also, it would be nice if we changed deno_graph to not load json modules and instead marked them as external similar to bytes and text imports.

[dsherret]

Seems like we could reduce duplication with the above? For example, something like resolving a json_media_type with Option<MediaType> then return this.

[nayeemrmn]

Maybe after JSON is changed from assert to coerce semantics like these ones, it's not nicely dedupable yet

[dsherret]

We need to add an unstable option for this:

deno_graph/src/graph.rs

Lines 1655 to 1657 in decafab

	pub unstable_bytes_imports: bool,
	/// Support unstable text imports.
	pub unstable_text_imports: bool,

Done

[nayeemrmn]

Should we instead have separate options for unstable_jsonc_imports/unstable_json5_imports?

[dsherret]

I think we should just have json5 imports since json5 is a superset of jsonc

[nayeemrmn]

denoland/deno#31226 (comment)