Create Object_Storage.md

[lastchance1228]

Added general overview article on object storage

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Did you read the instructions in the README?

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Have you read the instructions in CONTRIBUTING?

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Have you written this article by yourself? Have you taken inspiration from anywhere and then written it in your words?

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Yes, I wrote all the words myself. I originally learned about object storage through Andrew Brown's videos at https://www.exampro.co/clf-c01.

I also used this blog from IBM to gather information: https://www.ibm.com/cloud/blog/object-vs-file-vs-block-storage