Added temporary storage of guids of collections to be wiped on bootup when crash/reload (#109)

Co-authored-by: cake <admin@cakeandbanana.nl>
Reviewed-on: #109
Reviewed-by: defnotken <defnotken@noreply.git.lightless-sync.org>

LightlessSync/LightlessConfiguration/Configurations/LightlessConfig.cs

@@ -154,4 +154,5 @@ public class LightlessConfig : ILightlessConfiguration
     public bool SyncshellFinderEnabled { get; set; } = false;
     public string? SelectedFinderSyncshell { get; set; } = null;
     public string LastSeenVersion { get; set; } = string.Empty;
+    public HashSet<Guid> OrphanableTempCollections { get; set; } = [];
 }