Search for good embedding model

[cmikul]

• Look for: Types of inputs (facemesh data, eye data, etc.). Use template in "Reference guide for embedding model building (bad)" Collab notebook.

• Try to construct attention model from embedding model. ex: embedding_model.save() - Saves whole model to be used as layer in another model. Definitely use convolution for images.

• Edit reference guide and annotate to make ideas more clear.

• Look into fixing issue of unusable last frames in webm's. Go back to downloading webm's?