`capi init` `tsconfig.json` improvements

[kratico]

If a tsconfig.json is present, capi init creates a nets.ts file. The init subcommand should also check that the tsconfig.json

• compilerOptions.module is ES* or Node*
• compilerOptions.moduleResolution is node* or bundler
• includes the nets.ts (see #1088)

This is because the nets.ts is imported through esm/main.js with node --loader ts-node/esm

https://github.com/paritytech/capi/blob/950ddd1330c6abf00e9f8198c82309d0309a4357/_tasks/dnt.ts#L142-L147

The following check is naive because

• a tsconfig.json may extend from another config
• a tsconfig.json may have comments which are not parsable with JSON.parse (could use jsonc)

if (await fs.exists("tsconfig.json")) {
    const tsConfigJson = JSON.parse(await Deno.readTextFile("tsconfig.json"))
    assertManifest(tsConfigJson)
    if (!/^(es|node)/i.test(tsConfigJson.compilerOptions?.module ?? "")) {
      throw new Error(
        `Cannot use Capi with 'compilerOptions.module: "${tsConfigJson?.compilerOptions?.module}"'. Set 'tsconfig.json' 'compilerOptions.module' to 'ES*' or 'Node*'"`,
      )
    }
    if (!/^(node|bundler)/i.test(tsConfigJson?.compilerOptions?.moduleResolution ?? "")) {
      throw new Error(
        `Cannot use Capi with 'compilerOptions.module: "${tsConfigJson?.compilerOptions?.moduleResolution}"'. Set 'tsconfig.json' 'compilerOptions.moduleResolution' to 'node*' or 'bundler"`,
      )
    }
  }

[ryanleecode]

it cant be node has to be at least nodenext i think because node is still commonjs