Since it seems like #6111 will be blocked for a bit, I've forked
@tyree731's fork and implemented the requested changes.
This change adds support to the base Embeddings class for two methods,
aembed_query and aembed_documents, those two methods supporting async
equivalents of embed_query and
embed_documents respectively. This ever so slightly rounds out async
support within langchain, with an initial implementation of this
functionality being implemented for openai.
Implements https://github.com/hwchase17/langchain/issues/6109
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Co-authored-by: Stephen Tyree <tyree731@gmail.com>
