feat: add study content readonly endpoints

Tiku.Application/StudyContent/IStudyContentQueryService.cs

@@ -0,0 +1,26 @@
+using Tiku.Application.Catalog;
+
+namespace Tiku.Application.StudyContent;
+
+public interface IStudyContentQueryService
+{
+    Task<CatalogList<VocabularyUnitCatalogItem>> GetVocabularyUnitsAsync(
+        StudyContentFilter filter,
+        CancellationToken cancellationToken = default);
+
+    Task<CatalogList<VocabularyWordCatalogItem>> GetVocabularyWordsAsync(
+        StudyContentFilter filter,
+        CancellationToken cancellationToken = default);
+
+    Task<CatalogList<HandbookSubjectCatalogItem>> GetHandbookSubjectsAsync(
+        StudyContentFilter filter,
+        CancellationToken cancellationToken = default);
+
+    Task<CatalogList<HandbookChapterCatalogItem>> GetHandbookChaptersAsync(
+        StudyContentFilter filter,
+        CancellationToken cancellationToken = default);
+
+    Task<CatalogList<HandbookEntryCatalogItem>> GetHandbookEntriesAsync(
+        StudyContentFilter filter,
+        CancellationToken cancellationToken = default);
+}