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 {
-    companion object {
+object DaosModule {
     @Provides
     fun providesAuthorDao(
         database: NiADatabase,
@@ -50,4 +49,3 @@ interface DaosModule {
         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 {
-    companion object {
+object DatabaseModule {
     @Provides
     @Singleton
     fun providesNiADatabase(
@@ -40,4 +39,3 @@ interface DatabaseModule {
         "nia-database"
     ).build()
 }
-}