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/egui_demo_lib/src/demo/dancing_strings.rs

@@ -1,4 +1,9 @@
-use egui::{containers::*, epaint::PathStroke, *};
+use egui::{
+    containers::{Frame, Window},
+    emath, epaint,
+    epaint::PathStroke,
+    hex_color, lerp, pos2, remap, vec2, Color32, Context, Pos2, Rect, Ui,
+};
 
 #[derive(Default)]
 #[cfg_attr(feature = "serde", derive(serde::Deserialize, serde::Serialize))]

crates/egui_demo_lib/src/demo/drag_and_drop.rs

@@ -1,4 +1,4 @@
-use egui::*;
+use egui::{vec2, Color32, Context, Frame, Id, Ui, Window};
 
 #[derive(Clone, PartialEq, Eq)]
 #[cfg_attr(feature = "serde", derive(serde::Deserialize, serde::Serialize))]

crates/egui_demo_lib/src/demo/misc_demo_window.rs

@@ -1,6 +1,9 @@
-use super::*;
+use super::{Demo, View};
 
-use egui::*;
+use egui::{
+    vec2, Align, Checkbox, CollapsingHeader, Color32, Context, FontId, Frame, Resize, RichText,
+    Sense, Slider, Stroke, TextFormat, TextStyle, Ui, Vec2, Window,
+};
 
 /// Showcase some ui code
 #[cfg_attr(feature = "serde", derive(serde::Deserialize, serde::Serialize))]

crates/egui_demo_lib/src/demo/paint_bezier.rs

@@ -1,5 +1,8 @@
 use egui::epaint::{CubicBezierShape, PathShape, QuadraticBezierShape};
-use egui::*;
+use egui::{
+    emath, epaint, pos2, Color32, Context, Frame, Grid, Pos2, Rect, Sense, Shape, Stroke, Ui, Vec2,
+    Widget, Window,
+};
 
 #[cfg_attr(feature = "serde", derive(serde::Deserialize, serde::Serialize))]
 #[cfg_attr(feature = "serde", serde(default))]

crates/egui_demo_lib/src/demo/painting.rs

@@ -1,4 +1,4 @@
-use egui::*;
+use egui::{emath, vec2, Color32, Context, Frame, Pos2, Rect, Sense, Stroke, Ui, Window};
 
 #[cfg_attr(feature = "serde", derive(serde::Deserialize, serde::Serialize))]
 #[cfg_attr(feature = "serde", serde(default))]

crates/egui_demo_lib/src/demo/pan_zoom.rs

@@ -91,7 +91,7 @@ impl crate::View for PanZoom {
             (
                 egui::Pos2::new(60.0, 60.0),
                 Box::new(|ui, state| {
-                    use egui::epaint::*;
+                    use egui::epaint::{pos2, CircleShape, Color32, QuadraticBezierShape, Stroke};
                     // Smiley face.
                     let painter = ui.painter();
                     painter.add(CircleShape::filled(pos2(0.0, -10.0), 1.0, Color32::YELLOW));

crates/egui_demo_lib/src/demo/scrolling.rs

@@ -1,4 +1,7 @@
-use egui::{scroll_area::ScrollBarVisibility, *};
+use egui::{
+    pos2, scroll_area::ScrollBarVisibility, Align, Align2, Color32, DragValue, NumExt, Rect,
+    ScrollArea, Sense, Slider, Style, TextStyle, TextWrapMode, Ui, Vec2, Widget,
+};
 
 #[cfg_attr(feature = "serde", derive(serde::Deserialize, serde::Serialize))]
 #[derive(Clone, Copy, Debug, PartialEq)]

crates/egui_demo_lib/src/demo/sliders.rs

@@ -1,4 +1,4 @@
-use egui::{style::HandleShape, *};
+use egui::{style::HandleShape, Slider, SliderOrientation, Ui};
 use std::f64::INFINITY;
 
 /// Showcase sliders

crates/egui_demo_lib/src/demo/tests/layout_test.rs

@@ -1,4 +1,4 @@
-use egui::*;
+use egui::{vec2, Align, Direction, Layout, Resize, Slider, Ui};
 
 #[cfg_attr(feature = "serde", derive(serde::Deserialize, serde::Serialize))]
 #[cfg_attr(feature = "serde", serde(default))]

crates/egui_demo_lib/src/demo/tests/window_resize_test.rs

@@ -16,7 +16,7 @@ impl crate::Demo for WindowResizeTest {
     }
 
     fn show(&mut self, ctx: &egui::Context, open: &mut bool) {
-        use egui::*;
+        use egui::{Resize, ScrollArea, TextEdit, Window};
 
         Window::new("↔ auto-sized")
             .open(open)