Add New Integration for DeepInfra Embedding Model (#13323)

...ns/embeddings/llama-index-embeddings-deepinfra/.gitignore

...rations/embeddings/llama-index-embeddings-deepinfra/BUILD

...ions/embeddings/llama-index-embeddings-deepinfra/Makefile

...ons/embeddings/llama-index-embeddings-deepinfra/README.md

...beddings-deepinfra/llama_index/embeddings/deepinfra/BUILD

...gs-deepinfra/llama_index/embeddings/deepinfra/__init__.py

...ddings-deepinfra/llama_index/embeddings/deepinfra/base.py

...mbeddings/llama-index-embeddings-deepinfra/pyproject.toml

...s/embeddings/llama-index-embeddings-deepinfra/tests/BUILD

...ddings/llama-index-embeddings-deepinfra/tests/__init__.py

...x-embeddings-deepinfra/tests/test_embeddings_deepinfra.py