By tracking import use types to check whether it is scope uses or the other situations like module-relative uses, we can do more accurate redundant import checking.

fixes #117448

For example unnecessary imports in std::prelude that can be eliminated:

```rust
use std::option::Option::Some;//~ WARNING the item `Some` is imported redundantly
use std::option::Option::None; //~ WARNING the item `None` is imported redundantly
```

compiler/rustc_resolve/src/def_collector.rs

@@ -1,5 +1,5 @@
 use crate::{ImplTraitContext, Resolver};
-use rustc_ast::visit::{self, FnKind};
+use rustc_ast::visit::FnKind;
 use rustc_ast::*;
 use rustc_expand::expand::AstFragment;
 use rustc_hir::def::{CtorKind, CtorOf, DefKind};