add ENS support for address reverse resolution and avatar

[frimoldi]

ENS reverse resolution

By adding ENS reverse resolution, the AccountButton component now is able to display the ENS name and avatar image, instead of the Ethereum address.

Changes

• added @ensdomains/ensjs dependency to handle ENS reverse resolution (eth address => ens name).
• created Avatar shared component. this component will display the ENS avatar image if there's any, or Jazzicon otherwise.
• updated RariContext to provide the resolved ENS name.

[transmissions11]

hey thanks for your contribution, but we're not comfortable merging this with such a huge package-lock diff, as you could be installing a malicious npm package somewhere in there...

if you'd like to revise this PR to have a more minimal package-lock diff that we can certify is safe, we'd be happy to merge this :)

[frimoldi]

hey @transmissions11 , yeah that makes total sense. All I did was to include the @ensdomains/ensjs dependency, but I'll investigate why there's such a big diff on package-lock.

[transmissions11]

dw fren i trust you, but with all the frontend exploits going around recently we've gotta vet this stuff nonetheless 😅

as for why the diff is so large, i'd guess you're using an older version of NPM which uses a different package-lock format. try installing the version listed in the requirements README section.

[vercel]

@frimoldi is attempting to deploy a commit to the Rari Capital Team on Vercel.

A member of the Team first needs to authorize it.

[frimoldi]

@transmissions11 I've regenerated package-lock with the right npm version, still huge though.

[coveralls]

Pull Request Test Coverage Report for Build 1550235526

• 4 of 25 (16.0%) changed or added relevant lines in 5 files are covered.
• 95 unchanged lines in 16 files lost coverage.
• Overall coverage decreased (-1.1%) to 10.017%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
src/utils/shortAddress.ts	0	1	0.0%
src/utils/ens.ts	1	3	33.33%
src/components/shared/Avatar.tsx	1	5	20.0%
src/context/RariContext.tsx	1	15	6.67%

Files with Coverage Reduction	New Missed Lines	%
src/components/shared/GlowingButton.tsx	1	25.0%
src/rari-sdk/subpools/keeperdao.js	1	50.0%
src/hooks/useNoSlippageCurrencies.ts	2	50.0%
src/rari-sdk/subpools/fuse.js	2	84.62%
src/hooks/usePoolBalance.ts	3	52.0%
src/rari-sdk/cache.js	3	63.16%
src/rari-sdk/subpools/aave.js	3	11.76%
src/utils/bigUtils.ts	3	44.44%
src/rari-sdk/subpools/dydx.js	4	50.0%
src/rari-sdk/subpools/mstable.js	4	31.71%

Totals
Change from base Build 1537144180:	-1.1%
Covered Lines:	973
Relevant Lines:	6947

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💛 - Coveralls