Using TS SDK from waspc

[sodic]

These PR contains the changes that enable waspc to process TS SDK projects that look like this.

.
├── main.wasp.mts         // Wasp config file
├── package.json
├── package-lock.json
├── public
├── schema.prisma
├── src
├── tsconfig.src.json     // tsconfig for src
├── tsconfig.json         // Composite  tsconfig
├── tsconfig.wasp.json    // tsconfig for the Wasp config file
├── vite.config.ts
└── node_moduels
    ├── ...
    └── wasp-config       // The package for the TS sdk

The PR doesn't contain any code for creating the artifacts necessary for such a project (e.g., tsconfig templates, the wasp-config package), etc. It's just the Haskell code required to process it.

It's just the purple parts from this graph (the prep work and the blue parts are coming in #2299). The idea is to review this PR by treating the blue parts as a black box with a simple runNodeCommandAsJob interface (but if you really really want a project to try it out, I can hook you up).

[Martinsos]