[FrameworkBundle] add configuration for the Property Accessor 

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | yes
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | none
| License       | MIT
| Doc PR        | not yet done

This allow to configure the property accessor to enable magic `__call` feature

```yml
# config.yml
framework:
    property_accessor:
        magic_call: true #default is false
```

@bschussek