Remove wildcard imports (#5018)

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I removed (I hope so) all wildcard imports I found.

For me on my pc this improved the build time:
- for egui -5s
- for eframe -12s

* [x] I have followed the instructions in the PR template

crates/epaint/src/shape.rs

@@ -7,7 +7,7 @@ use crate::{
     text::{FontId, Fonts, Galley},
     Color32, Mesh, Stroke, TextureId,
 };
-use emath::*;
+use emath::{pos2, Align2, Pos2, Rangef, Rect, TSTransform, Vec2};
 
 pub use crate::{CubicBezierShape, QuadraticBezierShape};