[Generation] Create configuration model generator

@bohdan-harniuk is already working on this.

Since Sep 7, 2022.

Create a configuration model generator.

**Input:**

1. path to class (from the root of a module)
2. configuration model name (class name/file name)

**Output:**

Generated class in the specified directory (directories should be generated if not exist).
Generated scopeConfig parameter and constructor with its initialisation:

```php
/**
* @var ScopeConfigInterface
*/
private $scopeConfig;

/**
* @param ScopeConfigInterface $scopeConfig
*/
public function __construct(
ScopeConfigInterface $scopeConfig
) {
$this->scopeConfig = $scopeConfig;
}
```

**Acceptance Criteria:**

- this generation should be covered by test case.
- no actions should be created (will be done separately)
- consider implementing new architecture ways to create generators (try to not follow current one, maybe we can improve it)

**Additional context**

**Mainline branch:** mainline/generate-configuration-model