Start fleshing out simple controller

CarControlleriOS/CarController/SimpleControllerView.swift

@@ -10,14 +10,25 @@ import SwiftUI
 
 struct SimpleControllerView: View {
     @EnvironmentObject var server: ServerData
-    @State var throttle: Float = 0
-    @State var steering: Float = 0
+    @State var throttle: Float = 0.5
+    @State var steering: Float = 0.5
+
     
     var body: some View {
         HStack{
-            Text("Opened Simple Controller!")
-            Slider(value: $throttle)
-            Slider(value: $steering)
+            Slider(value: $throttle, in: 0...1){_ in
+                self.throttle = 0.5}
+            .rotationEffect(.degrees(270))
+         
+            Slider(value: $steering, in: 0...1){
+                _ in self.steering = 0.5
+            }
+        }
+        .onAppear(){
+            // Start the gRPC updater. Should be in a separate class/struct to be easier to implement for SLAM Controller after.
+        }
+        .onDisappear(){
+            
         }
     }
 }