Add solhint rule to check custom error names

[0xVolosnikov]

Adds an additional custom-error-domains rule for solhint which is designed to check that custom error names match the rules specified in:
https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/GUIDELINES.md#solidity-conventions

The rule checks that the error starts with a domain name. The "domain name" means:

• contract name
• ERC name (ERC<...>)

This takes into account both the contract itself and the contracts directly inherited by it.

An example of a "correct" custom error name:

interface IGovernor {
  error GovernorDisabledDeposit();
}

An example of an "incorrect" custom error name:

library DoubleEndedQueue {
  error QueueEmpty();
}

[changeset-bot]

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Latest commit: b5c7a3d

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