upgrade canvas to 0.11.0

[rjwebb]

This PR upgrades the Canvas version to 0.11.0.

Changes:

• libp2p changed their API for creating private keys and peer ids (PR). Canvas adopted the new API in version 0.11.0, so we need to update our code as well. The underlying format of the PEER_ID env var has not changed.
• The way we initialise the Canvas object has changed, we now pass libp2p-specific config fields to app.startLibp2p
• The constructor for SIWESigner has changed slightly, if we create a SIWESigner without a signer config value then it generates an ethers wallet and then saves it in local storage. This does not affect how Commonwealth works because we always pass in a signer config value (which would be some kind of handle to the MetaMask/WalletConnect/etc browser extension) but it meant that some of the test fixture code had to be changed to explicitly always create a new ethers wallet.

Link to Issue

Closes: #TODO

Description of Changes

• Adds FIXME widget to TODO page.

"How We Fixed It"

Test Plan

• Unit tested the FIXME() call.
• CA (click around) tested on local and frack:
  • TODO page

Deployment Plan

Other Considerations

[raykyri]

Reopening on a branch on the main hicommonwealth/commonwealth repo: https://github.com/hicommonwealth/commonwealth/compare/rjwebb/upgrade-canvas-to-0-11-0?expand=1