one-liner default options

[pedrouid]

Allowing clients to be instantiated with default options using our hosted hub by passing a network string as either rinkeby or mainnet (using mnemonic)

Rinkeby

import * as connext from "@connext/client"

const channel = await connext.connect("rinkeby")

Mainnet

import * as connext from "@connext/client"

const channel = await connext.connect("mainnet", { mnemonic })

[pedrouid]

NOTE: Don't merge this PR without consolidating with #738

[pedrouid]

Blocked by #742 to support testing

[todo-tracker]

Hey, pedrouid

We noticed you made changes to a file with a TODO on it.
These are set to make sure potential Technical Debt doesn't get forgotten.
While you're here take a shot at turning a listed TODO into a TODONE!

Id	Name	File	Priority
71	merge:	modules/client/src/node.ts	Normal
78	why is it sometimes data vs data.data?	modules/client/src/controllers/AbstractController.ts	Normal
83	should add once to top level client	modules/test-runner/src/util/helpers/fundChannel.ts	Normal
84	Currently, this test always fails because when promise is never rejected when	modules/test-runner/src/swap/swap.test.ts	Normal
85	events for withdrawal commitments! issue 698	modules/test-runner/src/withdraw/withdraw.test.ts	Normal

[pedrouid]

Requires #754 and it should have tests of itself too

[todo-tracker]

Hey, pedrouid

It looks like you made some changes to this pull request!
These changes included files that have a TODO linked to them.
Click the button below to view details on all the TODO for this pull request, and while you're here take a shot at turning a TODO into a TODONE!

Id	Name	File	Priority
86	clean up types from restore, without the any typing things	modules/client/src/channelProvider.ts	Normal
87	remove when using only store package	modules/client/src/channelProvider.ts	Normal
88	Currently the implementation implies that the backup service	modules/test-runner/src/util/helpers/backupService.ts	Normal

[LayneHaber]

we should also add a test that if you instantiate the default client and a client with client opts you get the same multisig address