TIS-884/AWS S3 support through `rutebanken-helpers/storage`#193

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esuomi wants to merge 3 commits intoentur:masterfrom esuomi:TIS-884/use_rutebanken_storage

+283-27

Commits on Dec 13, 2024

remove unnecessary methods from BlobStoreService which are GCS implementation specific and are not used outside it either
esuomi
committed

Commits on Dec 16, 2024

add shim for using rutebanken-storage based cloud blob storage implementations for file handling
esuomi
committed
add AWS S3 compatability through rutebanken-helpers storage implementation
esuomi
committed