Add SimulationService to controls

Will eventually attach to the Simulation directly without first going through Engine. For now just redirects calls to EngineService to keep functions intact.

lib/app_component.dart

@@ -6,6 +6,7 @@ import 'package:rules_of_living/components/header_component.dart';
 import 'package:rules_of_living/components/simulation_component.dart';
 import 'package:rules_of_living/service/configuration_service.dart';
 import 'package:rules_of_living/service/engine_service.dart';
+import 'package:rules_of_living/service/simulation_service.dart';
 
 @Component(
   selector: 'my-app',
@@ -24,6 +25,7 @@ import 'package:rules_of_living/service/engine_service.dart';
     materialProviders,
     ClassProvider(EngineService),
     ClassProvider(ConfigurationService),
+    ClassProvider(SimulationService)
   ],
   styleUrls: const [
     'package:angular_components/app_layout/layout.scss.css',

lib/components/controls_component.dart

@@ -1,6 +1,7 @@
 import 'package:angular/angular.dart';
 import 'package:angular_components/angular_components.dart';
 import 'package:rules_of_living/service/engine_service.dart';
+import 'package:rules_of_living/service/simulation_service.dart';
 
 @Component(
   selector: 'sim-controls',
@@ -16,8 +17,9 @@ import 'package:rules_of_living/service/engine_service.dart';
 )
 class ControlsComponent {
   final EngineService engine;
+  final SimulationService sim;
 
-  ControlsComponent(this.engine);
+  ControlsComponent(this.engine, this.sim);
 
   void onStartClicked() {
     engine.toggleRunning();
@@ -28,14 +30,14 @@ class ControlsComponent {
   }
 
   void onResetClicked() {
-    engine.reset();
+    sim.reset();
   }
 
   void onRandomClicked() {
-    engine.addRandomPattern();
+    sim.addRandomPattern();
   }
 
   void onClearClicked() {
-    engine.clear();
+    sim.clear();
   }
 }

lib/service/simulation_service.dart

@@ -0,0 +1,19 @@
+import 'package:rules_of_living/service/engine_service.dart';
+
+class SimulationService {
+  final EngineService engine;
+
+  SimulationService(this.engine);
+
+  void reset() {
+    engine.reset();
+  }
+
+  void addRandomPattern() {
+    engine.addRandomPattern();
+  }
+
+  void clear() {
+    engine.clear();
+  }
+}