feat: Support structs as search result

Author: nikcio

src/Meilisearch/ISearchableJsonConverter.cs

@@ -33,7 +33,7 @@ public override JsonConverter CreateConverter(Type typeToConvert, JsonSerializer
     /// The json converter for <see cref="ISearchable{T}"/>
     /// </summary>
     /// <typeparam name="T"></typeparam>
-    public class ISearchableJsonConverter<T> : JsonConverter<ISearchable<T>> where T : class
+    public class ISearchableJsonConverter<T> : JsonConverter<ISearchable<T>>
     {
         /// <inheritdoc/>
         public override ISearchable<T> Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)

tests/Meilisearch.Tests/Movie.cs

@@ -12,6 +12,14 @@ public class Movie
         public string Genre { get; set; }
     }
 
+    public struct MovieStruct
+    {
+        public string Id { get; set; }
+
+        public string Name { get; set; }
+
+        public string Genre { get; set; }
+    }
     public class MovieInfo
     {
         public string Comment { get; set; }

tests/Meilisearch.Tests/SearchTests.cs

@@ -45,6 +45,28 @@ public async Task BasicSearch()
             movies.Hits.ElementAt(1).Name.Should().NotBeEmpty();
         }
 
+        [Fact]
+        public async Task BasicSearchWithStruct()
+        {
+            var movies = await _basicIndex.SearchAsync<MovieStruct>("man");
+            movies.Hits.Should().NotBeEmpty();
+            movies.Hits.First().Name.Should().NotBeEmpty();
+            movies.Hits.ElementAt(1).Name.Should().NotBeEmpty();
+        }
+
+        [Fact]
+        public async Task PaginatedSearchWithStruct()
+        {
+            var movies = await _basicIndex.SearchAsync<MovieStruct>("man", new SearchQuery()
+            {
+                Page = 1,
+                HitsPerPage = 2,
+            });
+            movies.Hits.Should().NotBeEmpty();
+            movies.Hits.First().Name.Should().NotBeEmpty();
+            movies.Hits.ElementAt(1).Name.Should().NotBeEmpty();
+        }
+
         [Fact]
         public async Task BasicSearchWithNoQuery()
         {