add enabled option to SideMenu (#4037)

lib/android/app/src/main/java/com/reactnativenavigation/parse/SideMenuOptions.java

 
 public class SideMenuOptions {
     public Bool visible = new NullBool();
+    public Bool enabled = new NullBool();
     public Number height = new NullNumber();
     public Number width = new NullNumber();
 
         if (json == null) return options;
 
         options.visible = BoolParser.parse(json, "visible");
+        options.enabled = BoolParser.parse(json, "enabled");
         options.height = NumberParser.parse(json, "height");
         options.width = NumberParser.parse(json, "width");
 
         if (other.visible.hasValue()) {
             visible = other.visible;
         }
+        if (other.enabled.hasValue()) {
+            enabled = other.enabled;
+        }
         if (other.height.hasValue()) {
             height = other.height;
         }

lib/android/app/src/main/java/com/reactnativenavigation/presentation/SideMenuOptionsPresenter.java

         } else if (options.right.visible.isFalse() && sideMenu.isDrawerOpen(Gravity.RIGHT)){
             sideMenu.closeDrawer(Gravity.RIGHT);
         }
+
+        if (options.left.enabled.isFalse()) {
+            sideMenu.setDrawerLockMode(DrawerLayout.LOCK_MODE_LOCKED_CLOSED, Gravity.LEFT);
+        }
+        else  if (options.left.enabled.isTrue()) {
+            sideMenu.setDrawerLockMode(DrawerLayout.LOCK_MODE_UNLOCKED, Gravity.LEFT);
+        }
+
+        if (options.right.enabled.isFalse()) {
+            sideMenu.setDrawerLockMode(DrawerLayout.LOCK_MODE_LOCKED_CLOSED, Gravity.RIGHT);
+        }
+        else  if (options.right.enabled.isTrue()) {
+            sideMenu.setDrawerLockMode(DrawerLayout.LOCK_MODE_UNLOCKED, Gravity.RIGHT);
+        }
     }
 
     public boolean handleBack() {