Implement a command for generating type definitions from schemas

[vladfrangu]

We want to have a command to generate (currently only) TypeScript definitions for the input.json (and in the future from output schema, or dataset/key value store schemas)

For an idea of how such an implementation can be done, see https://github.com/apify-projects/types-from-schema-generator

The command name I'd say should be apify actor generate-types / actor generate-types (cc @B4nan)

It should have the following flags:

• output: path to a directory where the files generated should be outputted, default ./.generated/actor/ (actual path in code is gonna be resolve(cwd(), output), followed by mkdir(), then storing in there). char: o
• strict: whether generated interfaces should have an index definition ([key: string]: unknown if this is set to false), default true. char: s
• [can optionally be done] language: the language to generate the types for (currently only TypeScript, but ideally structure the code in a way where we can easily add in new languages). char: l
• [optional, nice to have, can be for future work] [input/output/dataset/key-value-store]-schema: path to a specific schema to generate types for
• [don't implement this until we discuss it] add-to-ignore: whether the cli should add the generated files to files like .prettierignore or the biome config, default: false. @B4nan lets discuss if we want this. char: i

When generating the files, the filename should ideally be the filename of the input schema, but with the appropriate language. So for example, if you're generating a file from ./my_schema.json, the result should be ./my_schema.ts

All generated files should have the following headers for TS:

// biome-ignore-all lint: Automatically generated file
/* eslint-disable -- Automatically generated file */

/**
 * This file was automatically generated by the actor CLI.
 * DO NOT MODIFY IT BY HAND. Instead, modify the source JSONSchema file,
 * and run `actor generate-types` to regenerate this file.
 *
 * Don't forget to add this file to the ignore list of your formatters and linters.
 */

[l2ysho]

Do we want to maintain https://github.com/apify-projects/types-from-schema-generator as a separate package or we move the implementation to CLI?

[B4nan]

I would move it here, and consolidate, it's a lot of super small files right now.