[CLN]: Consolidate compute embeddings functions into a single function

[spikechroma]

Describe the problem

Currently there are bunch of functions within the chromadb/api/models/CollectionCommon.py that all computes embeddings.

Describe the proposed solution

Consolidate these functions into a single function that can be reused across update, upsert and add

Alternatives considered

No response

Importance

nice to have

Additional Information

No response