chore: Renamed EmbeddingFunctions.py to follow snakecase convention (#669)

Signed-off-by: Osama Nabih <nabih_the_4th@yahoo.com>

embedchain/models/__init__.py

@@ -1,4 +1,4 @@
-from .EmbeddingFunctions import EmbeddingFunctions  # noqa: F401
+from .embedding_functions import EmbeddingFunctions  # noqa: F401
 from .providers import Providers  # noqa: F401
 from .vector_databases import VectorDatabases  # noqa: F401
 from .vector_dimensions import VectorDimensions  # noqa: F401