Add SQL query patterns documentation and Linux package build scripts

- Created `TV_SHOWS_SQL_QUERY_PATTERNS.md` to document SQL query patterns for TV shows, including performance issues and missing indexes.
- Added `README.md` for Linux package building, detailing steps for creating Debian and Red Hat packages.
- Implemented build scripts for Debian and Red Hat, including service files and post-installation hooks.
- Added necessary scripts for managing Jellyfin service lifecycle on both Debian and Red Hat systems.
- Included package specifications and installation instructions for both distributions.

Jellyfin.Api/Controllers/LibraryController.cs

@@ -451,7 +451,7 @@ public class LibraryController : BaseJellyfinApiController
     [HttpGet("Items/Counts")]
     [Authorize]
     [ProducesResponseType(StatusCodes.Status200OK)]
-    public ActionResult<ItemCounts> GetItemCounts(
+    public async Task<ActionResult<ItemCounts>> GetItemCounts(
         [FromQuery] Guid? userId,
         [FromQuery] bool? isFavorite)
     {
@@ -460,18 +460,20 @@ public class LibraryController : BaseJellyfinApiController
             ? null
             : _userManager.GetUserById(userId.Value);
 
-        var counts = new ItemCounts
+        var query = new InternalItemsQuery(user)
         {
-            AlbumCount = GetCount(BaseItemKind.MusicAlbum, user, isFavorite),
-            EpisodeCount = GetCount(BaseItemKind.Episode, user, isFavorite),
-            MovieCount = GetCount(BaseItemKind.Movie, user, isFavorite),
-            SeriesCount = GetCount(BaseItemKind.Series, user, isFavorite),
-            SongCount = GetCount(BaseItemKind.Audio, user, isFavorite),
-            MusicVideoCount = GetCount(BaseItemKind.MusicVideo, user, isFavorite),
-            BoxSetCount = GetCount(BaseItemKind.BoxSet, user, isFavorite),
-            BookCount = GetCount(BaseItemKind.Book, user, isFavorite)
+            Limit = 0,
+            Recursive = true,
+            IsVirtualItem = false,
+            IsFavorite = isFavorite,
+            DtoOptions = new DtoOptions(false)
+            {
+                EnableImages = false
+            }
         };
 
+        var counts = await _libraryManager.GetItemCountsAsync(query, HttpContext.RequestAborted).ConfigureAwait(false);
+
         return counts;
     }