bulid 설정 - 계측 테스트에 kotlinx-coroutines-test 추가

1. 계측 테스트에 사용할 kotlinx-coroutines-test 추가
2. 해당 라이브러리 적용하면서 META 중첩 에러 처리 추가

Author: cg072

app/build.gradle

@@ -30,6 +30,11 @@ android {
     testOptions.unitTests {
         includeAndroidResources = true
     }
+
+    packagingOptions {
+        pickFirst 'META-INF/AL2.0'
+        pickFirst 'META-INF/LGPL2.1'
+    }
 }
 
 dependencies {
@@ -70,6 +75,7 @@ dependencies {
     // AndroidX Test - Instrumented testing
     androidTestImplementation "androidx.test.ext:junit:$androidXTestExtKotlinRunnerVersion"
     androidTestImplementation "androidx.test.espresso:espresso-core:$espressoVersion"
+    androidTestImplementation "org.jetbrains.kotlinx:kotlinx-coroutines-test:$coroutinesVersion"
 
     // Kotlin
     implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlinVersion"