[New Rule] Class instantiation via new keyword

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### Description

`Magento2.Classes.ObjectInstantiation` Detects direct object instantiation via `new` keyword.

The test run of `Magento2.Classes.ObjectInstantiation` rule againstMagento2 codebase found >2000 issues. Some of them look like false-positive. Examples:

```
Direct Phrase object instantiation is discouraged in Magento. Use dependency injection or factories instead.
Direct \DOMXPath object instantiation is discouraged in Magento. Use dependency injection or factories instead.
Direct \DOMDocument object instantiation is discouraged in Magento. Use dependency injection or factories instead.
Direct \DateTime object instantiation is discouraged in Magento. Use dependency injection or factories instead.
Direct \Magento\Framework\File\Uploader object instantiation is discouraged in Magento. Use dependency injection or factories instead.
Direct \Zend_Validate_Alnum object instantiation is discouraged in Magento. Use dependency injection or factories instead.
Direct \Zend_Validate_Alpha object instantiation is discouraged in Magento. Use dependency injection or factories instead.
Direct \Zend_Db_Expr object instantiation is discouraged in Magento. Use dependency injection or factories instead.
Direct \NumberFormatter object instantiation is discouraged in Magento. Use dependency injection or factories instead.
Direct DataObject object instantiation is discouraged in Magento. Use dependency injection or factories instead.
Direct InputOption object instantiation is discouraged in Magento. Use dependency injection or factories instead.
Direct InputArgument object instantiation is discouraged in Magento. Use dependency injection or factories instead.
Direct Table object instantiation is discouraged in Magento. Use dependency injection or factories instead.
```

### Problem
Is there any cases when object instantiation via `new` keyword is allowed in Magento?

Start by reviewing the Magento2.Classes.ObjectInstantiation rule and its test run against the Magento2 codebase. Compare the listed false-positive examples and determine which direct new instantiations Magento permits. Done means the rule's behavior and tests clearly distinguish allowed cases from instantiations that should remain violations.

Written by the indexing model from the issue text.