Add IReadOnlyObservableList interface

src/ObservableCollections/IObservableCollection.cs

@@ -15,6 +15,11 @@ namespace ObservableCollections
         ISynchronizedView<T, TView> CreateView<TView>(Func<T, TView> transform, bool reverse = false);
     }
 
+    public interface IReadOnlyObservableList<T> :
+        IReadOnlyList<T>, IObservableCollection<T>
+    {
+    }
+
     public interface IReadOnlyObservableDictionary<TKey, TValue> : 
         IReadOnlyDictionary<TKey, TValue>, IObservableCollection<KeyValuePair<TKey, TValue>>
     {

src/ObservableCollections/ObservableList.Views.cs

@@ -7,7 +7,7 @@ using System.Linq;
 
 namespace ObservableCollections
 {
-    public sealed partial class ObservableList<T> : IList<T>, IReadOnlyList<T>, IObservableCollection<T>
+    public sealed partial class ObservableList<T> : IList<T>, IReadOnlyObservableList<T>
     {
         public ISynchronizedView<T, TView> CreateView<TView>(Func<T, TView> transform, bool reverse = false)
         {

src/ObservableCollections/ObservableList.cs

@@ -7,7 +7,7 @@ using System.Runtime.InteropServices;
 
 namespace ObservableCollections
 {
-    public sealed partial class ObservableList<T> : IList<T>, IReadOnlyList<T>, IObservableCollection<T>
+    public sealed partial class ObservableList<T> : IList<T>, IReadOnlyObservableList<T>
     {
         readonly List<T> list;
         public object SyncRoot { get; } = new();