feature: generate With methods using params arrays for list types

Given

```csharp
public Fixture With(Dictionary<string, object> dictionary) => this.With(ref _dictionary, dictionary);
```

When

Generate

Then

```csharp
public Fixture With(KeyValuePair<string, object> kvp) => this.With(ref _dictionary, kvp);
public Fixture With(params KeyValuePair<string, object>[] kvps) => this.With(ref _dictionary, kvps);
```
