Feature: Add liquity app

[mmv08]

This PR:

• Add liquity app

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CLA Assistant Lite All Contributors have signed the CLA.

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Type	Occurrences	Fixable
Errors	0	0
Warnings	0	0
Ignored	0	N/A

• Result: ✅ success
• Annotations: 0 total

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• Safe Multisig app rinkeby

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• Safe Multisig app mainnet

[mmv08]

We're waiting for the new version of the app with an icon present

[francovenica]

So I tried this one in Rinkeby
2 times with 1 ETH and 2k debt and both failed
1 time with 5 ETH and 2k debt and it failed
1 time with 10 ETH and 10k debt and It worked and got the LUSD

Since it worked for 10Eth and 10k debt I will assume that our job of making the app available and workable in the gnosis app is done and it works. Still, I'll leave details of the failed tx

For the first 3 attempts (1ETH and 5ETH) I had the warning that executing the tx could fail, only for the last signing and execution, not for the creation of the tx
Is weird that the app allows me to set 1ETH and 2000 debt to end up failing, but that's on the App side I think

Safe and env: https://pr2151--safereact.review.gnosisdev.com/rinkeby/app/#/safes/0x9913B9180C20C6b0F21B6480c84422F6ebc4B808/transactions
tx : 931 to 934
931 (failed) : https://rinkeby.etherscan.io/tx/0x999b340c6c628f2c0bee46a1161d636f8c1e417632f6c8c40f3d1a93ea4c4ec7
932 (failed) : https://rinkeby.etherscan.io/tx/0xf764c1283076eb7c24c3320a96c6f05694af7741b8f224c697cb0b4fd4bae608
933 ( failed) : https://rinkeby.etherscan.io/tx/0x32fd16dcb1c99aeff16c9bae7bcf48ddc83769fdf971839a7759f85dec17f95f
934 (sucessful) : https://rinkeby.etherscan.io/tx/0xec5bff91042c2e14a3fdf8d8c9a69c3e05d134887b2494fd331d3663af7a3cc0

Note: didn't test in on Mainnet since it seems you need a ton of ETH to make it work and I don't have those funds and even if I had them I see it as a waste of tokens to test it beyond of what I did in Rinkeby.

[francovenica]

@dasanra I'll approve it, but still give a look at my comment if you will.

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ESLint Summary View Full Report

Annotations are provided inline on the Files Changed tab. You can also see all annotations that were generated on the annotations page.

Type	Occurrences	Fixable
Errors	0	0
Warnings	0	0
Ignored	0	N/A

• Result: ✅ success
• Annotations: 0 total

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