v0.1.0-dev.1 of betto_inferencing

ONNX Runtime inference and embedding models for dense text retrieval. Changelog excerpt: Initial development release providing ONNX Runtime inference and embedding models for dense text retrieval on native platforms (macOS, Linux, Windows, Android, iOS). ### Features - EmbeddingModel— abstract interface for text-to-vector embedding, decoupling consumers from any specific inference backend. - OnnxEmbeddingModel— ONNX Runtime implementation backed by BGE Small En v1.5, delivering dense embeddings suitable for semantic search and retrieval tasks. - **BertTokenizer/ `Tok[...]