feat: add blockstorage capabilities

The client can now make calls to /storage/blocks endpoints of Deuce
No, you meant passing in the block_id as a parameter to create storageid right? That is what I have addressed in the next commit.
https://github.com/TheSriram/deuce-client/commit/a1cfc0b387d0c3d5e8bcf3fe2e5a8bcf66dc03fd#diff-5c8a364179d83be44588eb69cf0268ceR153

Simplifies the tests a bit.