feat(ml) backend takes image over HTTP (#2783)

* using pydantic BaseSetting

* ML API takes image file as input

* keeping image in memory

* reducing duplicate code

* using bytes instead of UploadFile & other small code improvements

* removed form-multipart, using HTTP body

* format code

---------

Co-authored-by: Alex Tran <alex.tran1502@gmail.com>

docker/docker-compose.yml

@@ -33,7 +33,6 @@ services:
     container_name: immich_machine_learning
     image: ghcr.io/immich-app/immich-machine-learning:${IMMICH_VERSION:-release}
     volumes:
-      - ${UPLOAD_LOCATION}:/usr/src/app/upload
       - model-cache:/cache
     env_file:
       - .env