Extends MappingGenerator to support full Elasticsearch mapping structures, enabling the use of advanced features like dynamic_templates, dynamic settings, and other mapping-level configurations.

Motivation

Previously, MappingGenerator only supported simple property definitions, automatically wrapping them in a properties key. This prevented users from utilizing advanced Elasticsearch mapping features that need to be defined at the mapping root level, such as dynamic_templates.

Changes

Detection Logic: The method now detects whether the mapping contains a properties key:

• If present: Treats it as a full mapping structure and uses it as-is
• If absent: Maintains backward compatibility by wrapping in properties

Example Usage:

// Simple format (backward compatible)
[
    'name' => 'articles',
    'mapping' => [
        'title' => ['type' => 'text'],
        'body' => ['type' => 'text']
    ]
]

// Advanced format (new)
[
    'name' => 'articles',
    'mapping' => [
        'properties' => [
            'title' => ['type' => 'text'],
            'body' => ['type' => 'text']
        ],
        'dynamic_templates' => [
            [
                'strings_as_keywords' => [
                    'match_mapping_type' => 'string',
                    'mapping' => ['type' => 'keyword']
                ]
            ]
        ],
        'dynamic' => 'strict'
    ]
]