Add Usual Usd0++ arbitrum data

[dlgnbu]

This pull request adds USD0++ token on the Arbitrum blockchain.
It refactors the existing function for Ethereum to support additional blockchain easily in future starting with Arbitrum.

[llamatester]

The usual-money adapter exports pools:

Test Suites: 1 passed, 1 total
Tests: 18 passed, 18 total
Snapshots: 0 total
Time: 0.291 s
Ran all test suites.

Nb of pools: 2
 

Sample pools:
┌─────────┬──────────────────────────────────────────────┬────────────┬───────────────┬──────────┬────────────────────┬────────────────────┬──────────────────────────────────────────────────┬──────────────────────────────────────────────────┐
│ (index) │                     pool                     │   chain    │    project    │  symbol  │       tvlUsd       │     apyReward      │                   rewardTokens                   │                 underlyingTokens                 │
├─────────┼──────────────────────────────────────────────┼────────────┼───────────────┼──────────┼────────────────────┼────────────────────┼──────────────────────────────────────────────────┼──────────────────────────────────────────────────┤
│    0    │ '0x35D8949372D46B7a3D5A56006AE77B215fc69bC0' │ 'Ethereum' │ 'usual-money' │ 'USD0++' │ 731022599.4794607  │ 59.882883093478334 │ [ '0xC4441c2BE5d8fA8126822B9929CA0b81Ea0DE38E' ] │ [ '0x73A15FeD60Bf67631dC6cd7Bc5B6e8da8190aCF5' ] │
│    1    │ '0x2B65F9d2e4B84a2dF6ff0525741b75d1276a9C2F' │ 'Arbitrum' │ 'usual-money' │ 'USD0++' │ 119820.31560323993 │ 59.882883093478334 │ [ '0xC4441c2BE5d8fA8126822B9929CA0b81Ea0DE38E' ] │ [ '0x35f1C5cB7Fb977E669fD244C567Da99d8a3a6850' ] │
└─────────┴──────────────────────────────────────────────┴────────────┴───────────────┴──────────┴────────────────────┴────────────────────┴──────────────────────────────────────────────────┴──────────────────────────────────────────────────┘

[dlgnbu]

@slasher125 Our project disappeared from the yields tab. Maybe there is something missing on my PR or where should I take a look to fix it?

It was previously shown as follows: https://defillama.com/yields?includ

[slasher125]

sorry about that, should be gud with next refresh!