Refactor and improve deweb code

[peterjah]

A lot of code is duplicate among deweb CLI and deweb frontens (home and uploader)

This lead to unmaintainable code and block further improvements.

what to do:

• add e2e test in the CLI to test differents usecase: website add/update/delete, with metadatas, file metadata etc..
  this will allow us to improve the code with confidence. If the same code is used in cli and frontend, its a win

• Put contracts specific code in massa web3 and reuse the the code in cli and frontends

  • indexer contract
    • retrieve stored websites, add a website
  • website contracts
    • get website data, metadatas

• create a generic operation batch sender that will be used for website chunk upload

  • this is a important piece of code, we need a clean and reliable stuff that we can optimize
  • It should use the sendOperationS (with a S) endpoint of the node.
  • Investigate how it could work with wallet provider and the supported wallets (sub issues will probably needed here)

• Eventually create a Deweb folder in massa web3 that will gather the Deweb specific helpers