A lovely sentiment, but not entirely recommended.
Certainly, human food shouldn't be left out - too salty, too fatty and too many other things.
But it also has the downside of creating dependency, depleting natural instincts, and also favouring some animals over others and thereby destabilising populations. The rotten truth of Mother Nature is that some animals die over Winter. But, regrettably, that's how it should be.
As a nature lover myself, I have to fight my instincts to leave food for animals, on a bird table, etc.
But one really shouldn't, as hard as that can be.
If you want to feed and support the wildlife, then plant the right plants, create the right habitats.
Sorry for being a buzzkill.