share whole series and seasons, not just single titles

Sharing a series or season now tags the entire tree (series, seasons,
episodes) so the guest can browse and play everything inside it, and
strips it all again at cleanup. Redeeming re-tags the tree, so episodes
added after the link was created show up on the next redemption. The
guest lockdown in the web client now asks the server whether a page's
item is visible to the guest instead of hard-coding the single shared
id, so guests can navigate inside the shared tree but nowhere else.
Libraries and collections are still rejected.

Bumps the version to 1.0.1.0.

Jellyfin.Plugin.ShareLinks/Services/ShareLinkCleanupService.cs

@@ -128,7 +128,7 @@ public sealed class ShareLinkCleanupService : IShareLinkCleanupService
             {
                 try
                 {
-                    var removed = await _itemTagService.RemoveTagAsync(item, record.AllowedTag!, cancellationToken).ConfigureAwait(false);
+                    var removed = await _itemTagService.RemoveTagTreeAsync(item, record.AllowedTag!, cancellationToken).ConfigureAwait(false);
                     record.MetadataTouched |= removed;
                 }
                 catch (Exception ex)