Use local IPFS node for larger file (volume/code) uploads

[BjrInt]

Problem

Uploading large files through the console is not working.

Solution

Use a local IPFS (helia) and pin the file using a STORE message instead.

Pitfalls

• Make sure the file is properly downloaded on the Aleph IPFS node before it is gc'ed

[philogicae]

We had many issues with Helia, so we dropped it in favor of a dedicated endpoint (implemented when we added the web3 hosting feature). I close this issue for now, we can open a new one if the idea of implementing Helia comes back on the table.