Add Feature: Metadata Extraction from Files

[marcobelligoli]

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Introduced functionality for extracting metadata from files. The feature supports multiple file types and retrieves key metadata for improved file management and analysis. Added a default metadata extractor and an implementation for the "Alfresco Transform Service". Also added the possibility to create custom components. Introduced a service to centralize metadata extraction with one or more extractors.

Changes:

• Added components to process metadata extraction.
• Added metadata extraction auto-configuration.
• Included unit tests to ensure reliability of the feature.
• Updated documentation with usage details.

[CLAassistant]

All committers have signed the CLA.