The Solidity parsers are outdated. There's a maintained alternative that should be used

**Describe the bug**
Not a bug but the 2 available Solidity parsers are very outdated. They don't support custom error declarations like so

```solidity
error MyCustomError(uint someArg);
```

**Additional context**
By looking at ConsenSys's parser's network searching for forks with more activity, I found this repository:

https://github.com/solidity-parser/parser

and it supports `CustomErrorDefinition`