Stop relying exclusively on Infura for IPFS

[asgeir-s]

We should check if there is a local provider available, if not, we can check if Infura is accessible, if not, we spin up a js-ipfs node.

Check this link for hardcoded ipfs.infura.io URLs: https://github.com/gnosis/tabula/search?q=%22ipfs.infura.io%22

We do not want Tablua to be easy to censor ;)

[asgeir-s]

The current state
Upload:

• we use Infura API
• then pinning

Download:

• we use Infura Gateway.

We should, in both cases use the user's locale IPFS node, but fallback to the Infura services.

The state that we want
Upload:

• if a user has specified an IPFS node URL we use that (requires UI).
• if not, we use a locale default IPFS node URL localhost:5001.
  Investigate if there is a way of getting the browser IPFS URL if it's configured via something like the IPFS companion or Brave. If that is possible use that instead of the two options mentioned above.
• else we use Infura API
• then pinning

Download:

• we use ipfs:// if possible. (not possible until there is some fix for Fetch API with IPFS url's are blocked by cross-site tracking prevention brave/brave-browser#18204 , will need to either use the Gateway or the connected ipfs http clien).
• else we use Infura Gateway.

[asgeir-s]

@cedricwaxwing: we need UI for letting the user specify an IPFS URL.

How it currently works:
If the user has a running IPFS node at the default URL http://localhost:5001/api/v0, then we use that.
If that is not available we fall back to Infura.

What we need:
In addition to the above, the user should be able to specify a custom IPFS node URL.
If a custom IPFS URL is set, then we use that instead.

For me, it would make sense if this was an option in the "address dropdown menu", like "Update Pinning Service", we could add "Update IPFS Node". The pop-up needs to explain that if no URL is specified it first tries to connect to a locale IPFS node at the default endpoint (http://localhost:5001/api/v0), if that is not available, it will connect to Infura. It also needs a text box for letting the user input a URL.

[cedricwaxwing]

@manboy-eth I've taken a stab here. Let me know if this works or needs updating:

Modal popup for Updating IPFS Node:
https://www.figma.com/file/IaimIfw2pXyR9PlQqdo6M2/Tabula?node-id=1330%3A4710&t=TNzdtzW1Jl2zbKRc-4

And the updated dropdown (ignore the other changes, as those can be captured in #183 ):
https://www.figma.com/file/IaimIfw2pXyR9PlQqdo6M2/Tabula?node-id=1153%3A6497&t=TNzdtzW1Jl2zbKRc-4

[juliopavila]

Download:

• we use ipfs:// if possible. (not possible until there is some fix for Fetch API with IPFS url's are blocked by cross-site tracking prevention brave/brave-browser#18204 , will need to either use the Gateway or the connected ipfs http clien).
• else we use Infura Gateway.

@manboy-eth About the download process, I think, for now, we're going to use IPFS Gateway because the Infura Public Gateway is no longer available https://docs.infura.io/infura/networks/ipfs/how-to/access-ipfs-content/public-gateway, the only way to use it is creating a dedicated server