Add project files.

JSMR.Application/Common/Search/ISearchQueryHandler.cs

@@ -0,0 +1,8 @@
+namespace JSMR.Application.Common.Search;
+
+public interface ISearchQueryHandler<TItem, TCriteria, TSortField>
+    where TCriteria : new()
+    where TSortField : struct, Enum
+{
+    Task<SearchResult<TItem>> HandleAsync(SearchOptions<TCriteria, TSortField> options, CancellationToken cancellationToken = default);
+}