where should i keep my project’s images in my aplication

The first thing I would reccomend is NOT storing images, files or any binary objects in a database. They, can, but they are not good at it. I can fix a car, but I am not good at it :)

Instead keep a path reference to your images. This could be a key, file name + path, etc. Something so your code will know where the image is.

If you are doing a web application the folder path is more a personal preference. I like dropping images in the /img folder. Partially b/c I started web dev back in 92, so short URLs were preferred. But I can and do use other folders for other image types. For example I keep all my PWA home screen icons in the /meta folder because I consider those images meta data of source. Not really part of the application itself, but part of the application identity.

Also, by keeping images as actual files you can cache and reuse them around your UX as needed instead of duplicating the data as part of an entity model/record.