Cogeo-mosaic

* add STACBackend (82)
* fix backends caching and switch to TTL cache (83)

* add Upload CLI (74, author kylebarron)
* fix boto3 dynamodb exception (75)

* Better mosaicJSON model testing and default center from bounds (73, author geospatial-jeff)

This is a major version, meaning a lot of refactoring was done and may lead to breaking changes.

* add quadkey_zoom option in CLI (41, author kylebarron)
* use R-tree from pygeos for testing intersections (43, author kylebarron)

Breaking changes
* added BackendStorage for dynamodb, s3, file and http (with kylebarron)
* added MosaicJSON pydantic model for internal mosaicjson representation (with kylebarron and geospatial-jeff)

* Bug fix, use pygeos from pypi instead of git repo

* remove stack related code (lambda handler, serverless)
* switch to pygeos (24)
* bug fixes
* add `last` pixel_method