No way to access compilation output files

### Command

build, serve

### Description

I have an esbuild plugin that is resposible to collect outputFiles after compilation (using `onEnd` hook with `result.outputFiles`).

When using application builder (esbuild) with custom plugins there is no way to access full list of outputFiles, only those emitted by `main` entrypoint compilation. There is no way to access additional files emited by angular builder, such as `polyfills`, assets, styles etc.

Previously, with using webpack plugin, i was able to get full list of outputFiles by using `processAssets` compilation hook.

I need to list emited files, as this is only way to get full names with filenames hash.

MY point is to build something like manifest of compilation result output files.

### Describe the solution you'd like

I would like to be able to access all compilation files by esbuild plugin.

### Describe alternatives you've considered

An alternative could be to access output files as an result of builder output, currently `build` command only returns `{success: true}` without information about output files.

Comienza por las rutas de build y serve del application builder y el hook onEnd del plugin de esbuild; después, inspecciona cómo se expone actualmente result.outputFiles. Determina cómo el conjunto completo generado, incluidos polyfills, assets y styles, o el resultado del comando de build, debería exponer nombres de archivo con hashes. La tarea se considera completada cuando un consumidor de un plugin o builder puede acceder a todos los archivos de salida de la compilación para un manifest.

Escrito por el modelo de indexación a partir del texto del issue.