Decouple modular generator from RLC logic

[timovv]

Once #2725 is complete, the modular output will no longer have any references to RLC code. But there will still be some dependencies on the RLC generator, for example:

• Metadata generation (README, package.json, etc)
• Creating the modular code model still depends on the RLC code model in some places. These dependencies should be removed so that the modular generator can be separated from the RLC generator.