Merge pull request #2442 from mapbox/2223-private-public-resource-configuration

[android] Configuration for limiting resource visibility

android/java/MapboxGLAndroidSDK/build.gradle

@@ -34,6 +34,10 @@ android {
         targetSdkVersion Integer.parseInt(project.ANDROID_BUILD_TARGET_SDK_VERSION)
     }
 
+    sourceSets {
+        main.res.srcDirs += 'src/main/res-public'
+    }
+
     repositories {
         mavenCentral()
     }

android/java/MapboxGLAndroidSDK/src/main/res-public/values/public.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!--Add references to exposed resources-->
+    <public name="AttributionAlertDialogStyle" type="style" />
+</resources>