NXP-10781: Factorize BUFFER_SIZE in common module
NXP-10781: Force digest computation if null (typically for a StringBlob) + use digest algorithm to hash content in tests
NXP-10781: Normalize blob's mime type and encoding in operations with a blob input
NXP-10781: Test content locally encoded in different ways to ensure it is always encoded in UTF-8 by the server
NXP-10781: Add TODO for streaming the content of a blob when uploading it
NXP-10781: Remove unused imports
NXP-10781: Rename blob content parameter
NXP-10781: Add relevant docstring for get_content
NXP-10781: Add ability to write fetched content to an output file