KAT-49: Navigated RaisedButton to CameraAccess page and added its import in ambulatory.dart

rescueapp/lib/start_triage_system/ambulatory.dart

 import 'package:flutter/material.dart';
+import 'camera_access.dart';
 import 'spontaneous_breathing_present.dart';
 
 class Ambulatory extends StatefulWidget {
@@ -56,7 +57,14 @@ class _AmbulatoryState extends State<Ambulatory> {
                                 fontWeight: FontWeight.w600,
                                 color: Colors.blue[900])),
                         color: Colors.blue,
-                        onPressed: null ))),
+                        onPressed: () {
+                          Navigator.push(
+                            context,
+                            MaterialPageRoute(
+                                builder: (context) =>
+                                    CameraAccess()),
+                          );
+                        } ))),
             SizedBox(
               height: 10,
             ),