Allow specifying qualityies to prevent cache abuse

[rentalhost]

Proposal

Today we can determine settings in next.config.js for images.deviceSizes, which allows us to generate an error when the specified size does not belong to this list. However, we can still determine qualityies as we wish, which can generate cache abuse if a malicious user enters values ​​from 1 to 100 for each image, the application's proposal is to always use one or two specific qualities, most of the time.

It would be interesting to be able to delimit the qualities we want to make available, such as 75 and 100, and any other value could generate an access error.