fix(flame_3d)!: Fix material on Line3D

packages/flame_3d/lib/src/components/line_3d.dart

@@ -1,5 +1,4 @@
 import 'dart:math' as math;
-import 'dart:ui';
 
 import 'package:flame_3d/components.dart';
 import 'package:flame_3d/game.dart';
@@ -9,25 +8,25 @@ class Line3D extends MeshComponent {
   Line3D._({
     required double radius,
     required double height,
-    required Color color,
+    required Material material,
   }) : super(
          mesh: CylinderMesh(
            radius: radius,
            height: height,
-           material: SpatialMaterial()..albedoColor = color,
+           material: material,
          ),
        );
 
   factory Line3D.generate({
     required Vector3 start,
     required Vector3 end,
-    required Color color,
+    required Material material,
     double radius = 0.01,
   }) {
     final line = Line3D._(
       radius: radius,
       height: start.distanceTo(end),
-      color: color,
+      material: material,
     );
     line.transform.setFrom(_calculateTransform(start, end));
     return line;

packages/flame_3d/test/components/line_3d_test.dart

@@ -1,7 +1,6 @@
-import 'dart:ui';
-
 import 'package:flame_3d/components.dart';
 import 'package:flame_3d/core.dart';
+import 'package:flame_3d/resources.dart';
 import 'package:flame_test/flame_test.dart';
 import 'package:flutter_test/flutter_test.dart';
 
@@ -11,7 +10,7 @@ void main() {
       final line = Line3D.generate(
         start: Vector3(0, -1, 0),
         end: Vector3(0, 1, 0),
-        color: const Color(0xFFFFFFFF),
+        material: UnlitMaterial(),
       );
 
       expect(
@@ -24,7 +23,7 @@ void main() {
       final line = Line3D.generate(
         start: Vector3(-1, 0, 0),
         end: Vector3(1, 0, 0),
-        color: const Color(0xFFFFFFFF),
+        material: UnlitMaterial(),
       );
 
       expect(