Eddiebot: Bot logs `undefined` sometimes

[alrifay]

details parameter can be undefined, we should check if it has a value before logging it.
https://github.com/EddieJaoudeCommunity/EddieBot/blob/f82d0dee089d08b272cc27ecfcbb8dee1abbb544/src/logger.ts#L22

For example:

if (details) {
    await channel.send(`${type.toUpperCase()}: ${message} - ${details}`); 
} else {
    await channel.send(`${type.toUpperCase()}: ${message}`); 
}

[BOLT04]

@alrifay thank you so much for raising this issue! Indeed we should make your suggestion... or you can do it and get green squares for contributing 😁 🟩