Add authentication and multi-tenancy to w3s driver

[leszko]

Use the provided key and proof for the web3.storage authentication.

In the w3s driver implementation PR, the w3 CLI is used with its stored credentials. We need to change it, so that the credentials passed while creating the driver (key and proof) are used.

Ideas how to solve it:

1. Use a separate NodeJS script (as presented in the PoC PR)
   • We would need to implement the functions: w3 can store add and w3 can upload add (no need for w3 up)
   • The advantage is that the credentials can be stored in memory only
   • The drawback is that we'll need to have a separate NodeJS script in the catalyst-api repo
2. Feed w3 CLI with key and proof (use profiles for multi-tenency)