feat: add `modulePath` option to nitrogen

[corasan]

This PR adds a new option, --modulePath, which will let you specify where the module (podspec) is located and use this path to autolink the native files. Also adds "CLI Options" section to the Nitrogen docs

Why

When using the --out option on nitrogen the CLI assumes the Module.podspec file is at the root of the project, which results in the generated files not being auto linked when using a custom folder structure in a project.

Let's say I run bunx nitro-codegen ./modules --out=modules/generated

my-project
  ios/
  android/
  src/
  modules/
    generated/
       ios/
          MyModule+autolinking.rb
         ....
    MyModule.podspec
  package.json
  ...

This will generate a MyModule+autolinking.rb file that will look for the generated files at path modules/generated/**/*.{*}, and since MyModule.podspec is at modules/ it can't find the directory modules relative to it. This will result in the files not being added to source_files, public_header_files, and private_header_files of the spec.

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Name	Status	Preview	Comments	Updated (UTC)
nitro-docs	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Feb 27, 2025 7:57pm