Fix for http requests

- Replaced kotlinx serializer by gson serializer due to open issue in github Kotlin/kotlinx.serialization#576
- Replaced okhttp android client by ktor android client due to issues related to kotlin. It seems that it is related to latest version of okjhttp but even compiling with jvm target 1.8 is still failing:
square/okhttp#4597

gradle.properties

@@ -8,7 +8,7 @@ constraint_version=1.1.3
 recycler_version=1.2.0-alpha01
 material_version=1.2.0-alpha03
 glide_version=4.9.0
-serialization_version=0.13.0
+serialization_version=0.20.0
 fragment_version=1.1.0
 ktor_version=1.3.1
 multiplatform_settings_version=0.5

helios-rewarding-sdk/build.gradle

@@ -47,9 +47,8 @@ dependencies {
     implementation "org.jetbrains.kotlinx:kotlinx-serialization-runtime:$serialization_version"
 
     implementation "com.russhwolf:multiplatform-settings:0.5"
-    implementation "io.ktor:ktor-client-okhttp:$ktor_version"
-    implementation "io.ktor:ktor-client-json-jvm:$ktor_version"
-    implementation "io.ktor:ktor-client-serialization-jvm:$ktor_version"
+    implementation "io.ktor:ktor-client-android:$ktor_version"
+    implementation "io.ktor:ktor-client-gson:$ktor_version"
     implementation "io.ktor:ktor-client-auth-jvm:$ktor_version"
     implementation "io.ktor:ktor-client-logging-jvm:$ktor_version"
 }

helios-rewarding-sdk/src/main/AndroidManifest.xml

@@ -1,5 +1,6 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="com.wordline.helios.rewarding.sdk">
 
-    /
+    <uses-permission android:name="android.permission.INTERNET" />
+
 </manifest>

helios-rewarding-sdk/src/main/java/com/wordline/helios/rewarding/sdk/data/datasource/remote/CommonRemoteDataSource.kt

@@ -6,9 +6,10 @@ import com.wordline.helios.rewarding.sdk.domain.model.Either
 import com.wordline.helios.rewarding.sdk.domain.model.Error
 import com.wordline.helios.rewarding.sdk.domain.model.Success
 import io.ktor.client.HttpClient
+import io.ktor.client.engine.android.Android
 import io.ktor.client.features.ClientRequestException
+import io.ktor.client.features.json.GsonSerializer
 import io.ktor.client.features.json.JsonFeature
-import io.ktor.client.features.json.serializer.KotlinxSerializer
 import io.ktor.client.features.logging.LogLevel
 import io.ktor.client.features.logging.Logger
 import io.ktor.client.features.logging.Logging
@@ -25,7 +26,7 @@ class CommonRemoteDataSource(localDataSource: LocalDataSource) : RemoteDataSourc
         private const val TOKEN_HEADER = "Authorization"
     }
 
-    private val client = HttpClient {
+    private val client = HttpClient(Android) {
         // install(Auth) {
         //     basic {
         //         username = AUTH_USER
@@ -39,7 +40,7 @@ class CommonRemoteDataSource(localDataSource: LocalDataSource) : RemoteDataSourc
         }
 
         install(JsonFeature) {
-            serializer = KotlinxSerializer()
+            serializer = GsonSerializer()
         }
 
         install(TokenFeature) {