Replace module interfaces with objects

Change-Id: Ieab7533120e7b8d5a770963e37b9db405e229630

app/src/main/java/com/google/samples/apps/nowinandroid/di/DaosModule.kt

@@ -28,8 +28,7 @@ import dagger.hilt.components.SingletonComponent
 
 @Module
 @InstallIn(SingletonComponent::class)
-interface DaosModule {
+object DaosModule {
-    companion object {
     @Provides
     fun providesAuthorDao(
         database: NiADatabase,
@@ -49,5 +48,4 @@ interface DaosModule {
     fun providesNewsResourceDao(
         database: NiADatabase,
     ): NewsResourceDao = database.newsResourceDao()
-    }
 }

app/src/main/java/com/google/samples/apps/nowinandroid/di/DatabaseModule.kt

@@ -28,8 +28,7 @@ import javax.inject.Singleton
 
 @Module
 @InstallIn(SingletonComponent::class)
-interface DatabaseModule {
+object DatabaseModule {
-    companion object {
     @Provides
     @Singleton
     fun providesNiADatabase(
@@ -39,5 +38,4 @@ interface DatabaseModule {
         NiADatabase::class.java,
         "nia-database"
     ).build()
-    }
 }