Add withoutManifest() option to skip manifest file generation

[pawell67]

What this does

Adds a withoutManifest() method to TypeScriptTransformerConfigFactory that allows opting out of manifest file generation.

Why

The typescript-transformer-manifest.json file is useful for caching (it prevents rewriting unchanged output files), but it can be undesirable in some workflows:

• When the output directory is a committed git submodule — the manifest shows up as an unexpected new tracked file
• When the output directory is version-controlled and a clean diff is preferred
• When manifest-based caching is not needed (e.g. in CI)

Usage

$config
    ->outputDirectory(resource_path('frontend/types'))
    ->writer(new GlobalNamespaceWriter('generated.d.ts'))
    ->withoutManifest();

Changes

• TypeScriptTransformerConfig — added bool $generateManifest = true property
• TypeScriptTransformerConfigFactory — added withoutManifest() method and bool $generateManifest = true field, passed through to config
• WriteFilesAction — when generateManifest is false, skips manifest read/write and writes all files directly