@JvmStatic @JvmOverloads fun init(context: Context, appKey: String, customScheme: String? = null, loggingEnabled: Boolean? = null, hosts: ServerHosts? = null, approvalType: ApprovalType? = null): Unit
Kakao SDK 초기화. Application.onCreate 내에서 호출 권장.
fun init(context: Context, appKey: String, customScheme: String, loggingEnabled: Boolean, hosts: ServerHosts, approvalType: ApprovalType, type: Type): Unit