Code Inspection: Duplicate package entries in composer.json

Reports duplicate package entries in the require and require-dev sections of composer.json.

In the following example, the composer.json file contains two duplicate "phpunit/phpunit" entries.

{
    "name": "vendor/my_package",

    "require": {
        "phpunit/phpunit": "9.5.x",
        "symfony/console": "6.1.x",
        "phpunit/phpunit": "9.5.x"
    }
}