Asset copy with wildcard in the input path

# 🚀 Feature request

### Command (mark with an `x`)

```
- [ ] new
- [ x] build
- [ x] serve
- [x ] test
- [ x] e2e
- [ ] generate
- [ ] add
- [ ] update
- [ ] lint
- [ ] xi18n
- [ ] run
- [ ] config
- [ ] help
- [ ] version
- [ ] doc
```

### Description
Currently assets array allows glob with input path, however input path itself does not support wildcards.
Like ./node_modules/@myscope/**/assets/i18n/*
Where ** is any number of unknown libraries (like shared, services, featureabc).

With glob it would also create every folder between @myscope to assets/i18n, instead of copying just the contents of i18n.

### Describe the solution you'd like
The input path allows wildcards to set the root or a flag to only copy contents of the glob result path.

### Describe alternatives you've considered
Node scripts that requires extra steps and wouldn't know if project output is different from dist and it does not work with serve.

Inizia tracciando la gestione degli asset nei comandi build, serve, test ed e2e, poiché l’issue segnala un comportamento diverso tra loro. Definisci come i percorsi di input con wildcard debbano stabilire la radice di copia e verifica che gli asset richiesti vengano copiati senza cartelle intermedie indesiderate. Il lavoro è completato quando il percorso con wildcard funziona in modo coerente per i comandi elencati, incluso l’output di serve.

Scritto dal modello di indicizzazione a partire dal testo della issue.