Update eslint config

We've been continuously adding some rules to the eslint config in pwn_frontend, so it would be worth to revisit it some time in the future (not urgent) and update the config values as well here (those that make sense to apply in this shared repo).

FYI I've created this issue as part of this conversation: https://github.com/PWNFinance/pwn_frontend/pull/1157#discussion_r1351149536