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_transform.rs

@@ -1,6 +1,9 @@
 use std::sync::Arc;
 
-use crate::*;
+use crate::{
+    color, CircleShape, Color32, ColorMode, CubicBezierShape, EllipseShape, Mesh, PathShape,
+    QuadraticBezierShape, RectShape, Shape, TextShape,
+};
 
 /// Remember to handle [`Color32::PLACEHOLDER`] specially!
 pub fn adjust_colors(