[RFR] Download refactor (#307)

* download data without fetch tiles

* typo fix

* download tags without fetch tiles

* sidecar suffix

* root sidecar handling

* black

* download embeddings refactor + some bug fixes along the way

* tpoic download refactor

* duplicate refactor... time to bug hunt

* sig version bump

* remove unused imports

* dont use tiles in order - depend on ordering of tile manifest

* logging and more cleanup

* bug fixes and working downloads?

* fix pyright?

* fix pyright

* allow empty sidecar

* resolve pr comments

* remove progress bar for data download for now as its confusing

* tqdm on sidecar download for now