get embedds ready for production usage

[infrawhispers]

there are a bunch of things that we need to do to get to a 0.1.0 release. here is an evolving list:

• [x] rename embeddings -> embedds
• [x] document the HTTP apis in a README.md
• [ ] document the list of available models
• [x] validate that we can load and run all CLIP models exported in .onnx by JINA
• [ ] add usage of setence-t5-* models
• [ ] add usage of gtr-t5-xxl
• [ ] add usage of msmarco-bert-condensor
• [ ] add usage of bert-base-uncased
• [ ] create and publish a python client