refactor: convert libp2p config to async/await

[jacobheun]

This updates libp2p configuration to the async refactor.

• Depends on libp2p 0.27 release

[alanshaw]

@jacobheun prior art #2588

[jacobheun]

@jacobheun prior art #2588

@alanshaw @lidel should we change and merge that PR into the feat/ipfsx-boot-and-add branch?

[alanshaw]

Ah, looking at the changes, I think we'll have to re-apply them to feat/ipfsx-boot-and-add when everything is merged in, will probably be a nightmare to merge.

[lidel]

@jacobheun I closed #2588: it is small enough to apply it manually on this branch.
Its main purpose was to be a list of places to update peerid code, so we save time during the refactor.

[alanshaw]

@jacobheun I've applied @lidel's changes from #2588 to #2683

[alanshaw]

@jacobheun FYI libp2p/js-libp2p-keychain#40 and ipfs/js-ipns#32

[alanshaw]

@jacobheun over in #2683 I'm now blocked on some libp2p ❤️:

➜ npx mocha test/core/interface.spec.js --bail

  interface-ipfs-core tests
    .add
      1) "before all" hook for "should add a File"
(node:78400) UnhandledPromiseRejectionWarning: TypeError: Cannot read property 'Symbol(Symbol.toStringTag)' of undefined
    at /Users/alan/Code/pl/ipfs/js-ipfs/node_modules/libp2p/src/index.js:114:52
    at Array.forEach (<anonymous>)
    at new Libp2p (node_modules/libp2p/src/index.js:113:29)
    at Object.libp2p (src/core/components/libp2p.js:28:14)
    at Proxy.start (src/core/components/start.js:37:38)
    at async InProc.start (node_modules/ipfsd-ctl/src/ipfsd-in-proc.js:125:7)
    at async Factory.spawn (node_modules/ipfsd-ctl/src/factory.js:141:7)
    at async Context.<anonymous> (node_modules/interface-ipfs-core/src/add.js:32:34)
(node:78400) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). (rejection id: 1)
(node:78400) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.

[jacobheun]

If we want to start gathering all of the refactor work into refactor/async-await-roundup this should be ready to look at. It's just configuration right now, but the other pieces will be harder to verify until we get a good baseline of tests running in #2683. I did cherry-pick these commits onto that branch and verified that npx mocha test/core/interface.spec.js --bail is getting passed libp2p setup. There may be some issues, but that might be easier to suss out after we have more tests running.

[alanshaw]

LGTM thanks @jacobheun