[doc] SamGIS version: handle case for package not installed; update README.md

[doc] update docs, bump to version 1.3.0

[doc] use new typing hints from samgis_core

[feat] take advantage of re-usable image embeddings in SAM model

[feat] add more functions to handle different inference cases, using also an embedding dict to store embedding images

[chore] update dependencies version, both for backend and static frontend, bump to version 1.2.2

[refactor] import aws_lambda_powertools and define tests about aws lambda integration only when IS_AWS_LAMBDA is defined

[chore] update frontend dependencies version; update fastapi version to 0.109.2; pin onnxruntime version to 1.16.3; bump samgis version to 1.2.1

[refactor] move core instance segmentation (segment anything) functionality to samgis_core, bump to version 1.2.0

[test] add local server as tiles xyz provider

[fix] fix loguru logger for fastapi app

[test] add raster helpers test cases

[test] add fastapi app test cases

[feat] (backend) add nextzen terrain xyz provider as DEM raster source, make sam predictions with RGB image made with normalized slope, elevation and curvature as channels

[refactor] first working stage for huggingface docker container with fastapi and loguru

[refactor] use poetry also to build the aws docker images

[refactor] renamed backend package to samgis