Provide tooling to work with 3rd party libraries where the components are not named

I work a lot with 3rd party software where the UI has not been well designed and components generally do not have a 'name' attribute set, and that makes the matching code quite verbose, or sometimes impossible and I have to resort to reflection to access the components.

I've raised a PR https://github.com/assertj/assertj-swing/pull/255 which addresses this by providing a mechanism to set the name of components. It works as follows:

**Use the field name where possible. e.g.**

`private JTextField myText; // Set the name to be 'myText'`

**For anonymous fields, use a unique generated name. e.g.**

```
public void createComponents(){
add(new JTextField()); // Set the name to be 'JTextField-1'
add(new JTextField()); // Set the name to be 'JTextField-2'
}
```

**Optionally allow overwriting the names of fields. This is useful where the components have been given unsuitable or identical names.**

```
public void createComponentsBadly(){
textField1.setName("text1");
...
textField2.setName("text1");
}
```

**Optionally allow only using generated names. This is useful when the code has been obfuscated and the field names do not provide any meaning, or when the field names are confusing**

```
private JTextField a; // Set the name to be 'JTextField-1'
private JTextField b; // Set the name to be 'JTextField-2'
private JTextField combo1; // Set the name to be 'JTextField-3'
```