spaCy Transformers: Integrate Hugging Face Models

The `spacy-transformers` library provides spaCy components and architectures to seamlessly integrate pre-trained transformer models from Hugging Face's `transformers` library into spaCy pipelines. It enables convenient access to state-of-the-art architectures like BERT, GPT-2, and XLNet for various NLP tasks, leveraging spaCy v3's powerful and extensible configuration system for multi-task learning. The current version is 1.4.0, and releases are generally aligned with spaCy's major version updates and `transformers` library advancements.