changed to use resource_bundle instead of resource (#4525)

Author: Francisco-Costa98

MapboxNavigation.podspec

@@ -36,7 +36,7 @@ Pod::Spec.new do |s|
 
   # ――― Resources ―――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――― #
 
-  s.resources = ['Sources/MapboxNavigation/Resources/*/*', 'Sources/MapboxNavigation/Resources/*']
+  s.resource_bundle = {'MapboxNavigationResources' => ['Sources/MapboxNavigation/Resources/*/*', 'Sources/MapboxNavigation/Resources/*']}
 
   # ――― Project Settings ――――――――――――――――――――――――――――――――――――――――――――――――――――――――― #
 

Sources/MapboxNavigation/Bundle.swift

@@ -12,7 +12,16 @@ extension Bundle {
             #if SWIFT_PACKAGE
             return .module
             #else
-            return Bundle(for: NavigationViewController.self)
+            var frameworkBundle = Bundle(for: NavigationViewController.self)
+            
+            guard let resourceBundleURL = frameworkBundle.url(
+            forResource: "MapboxNavigationResources", withExtension: "bundle")
+                else { fatalError("MapboxNavigationResources.bundle not found!") }
+            
+            guard let resourceBundle = Bundle(url: resourceBundleURL)
+                else { fatalError("Cannot access MapboxNavigationResources.bundle!") }
+            
+            return resourceBundle
             #endif
         }
     }