Add small home banner ad layout and update native ad references#138

MihaiCristianCondrea merged 7 commits intomainMihaiCristianCondrea/Android-Studio-Tutorials-Java-Edition:mainfrom

codex/rename-native_ad-and-create-small-ad-layoutMihaiCristianCondrea/Android-Studio-Tutorials-Java-Edition:codex/rename-native_ad-and-create-small-ad-layoutCopy head branch name to clipboard