Add nullable list tests

Author: Giorgi

DuckDB.NET.Test/DuckDBManagedAppenderListTests.cs

@@ -16,6 +16,12 @@ public void ListValuesBool()
         ListValuesInternal("Bool", faker => faker.Random.Bool());
     }
 
+    [Fact]
+    public void ListValuesBoolNullable()
+    {
+        ListValuesInternal("Bool", faker => faker.Random.Bool().OrNull(faker));
+    }
+
     [Fact]
     public void ListValuesSByte()
     {
@@ -33,6 +39,12 @@ public void ListValuesInt()
     {
         ListValuesInternal("Integer", faker => faker.Random.Int());
     }
+    
+    [Fact]
+    public void ListValuesIntNullable()
+    {
+        ListValuesInternal("Integer", faker => faker.Random.Int().OrNull(faker));
+    }
 
     [Fact]
     public void ListValuesLong()
@@ -94,6 +106,12 @@ public void ListValuesDouble()
         ListValuesInternal("Double", faker => faker.Random.Double());
     }
 
+    [Fact]
+    public void ListValuesDoubleNullable()
+    {
+        ListValuesInternal("Double", faker => faker.Random.Double().OrNull(faker));
+    }
+
     [Fact]
     public void ListValuesGuid()
     {
@@ -129,12 +147,6 @@ public void ArrayValuesInt()
         ListValuesInternal("Integer", faker => faker.Random.Int(), 5);
     }
 
-    [Fact]
-    public void ListValuesNullableDouble()
-    {
-        ListValuesInternal("Double", faker => faker.Random.Double().OrNull(faker));
-    }
-
     private void ListValuesInternal<T>(string typeName, Func<Faker, T> generator, int? length = null)
     {
         var rows = 2000;