Implemented pattern of *Config interfaces to initialize internal classes

app/src/main/java/io/elixxir/dapp/DappSdk.kt

app/src/main/java/io/elixxir/dapp/SdkConfig.kt

...java/io/elixxir/dapp/android/data/DefaultAndroidConfig.kt

.../main/java/io/elixxir/dapp/android/model/AndroidConfig.kt

app/src/main/java/io/elixxir/dapp/logger/data/Logger.kt

app/src/main/java/io/elixxir/dapp/logger/data/NoLogging.kt

app/src/main/java/io/elixxir/dapp/logger/data/Timber.kt

app/src/main/java/io/elixxir/dapp/logger/model/LogLevel.kt

...rc/main/java/io/elixxir/dapp/logger/model/LoggerConfig.kt

app/src/main/java/io/elixxir/dapp/model/DappConfig.kt

app/src/main/java/io/elixxir/dapp/model/RetryStrategy.kt

...in/java/io/elixxir/dapp/networking/model/NetworkConfig.kt

app/src/main/java/io/elixxir/dapp/session/SessionConfig.kt

...c/main/java/io/elixxir/dapp/session/data/NdfDataSource.kt

...main/java/io/elixxir/dapp/session/data/SessionKeyStore.kt

.../main/java/io/elixxir/dapp/session/data/SessionManager.kt

...rc/main/java/io/elixxir/dapp/session/model/Environment.kt

app/src/main/java/io/elixxir/dapp/session/model/NdfConfig.kt

.../main/java/io/elixxir/dapp/session/model/SessionModels.kt

app/src/main/java/io/elixxir/dapp/util/ByteArray.kt