Add comments

Author: JimBobSquarePants

src/ImageSharp.Web/Commands/PresetOnlyQueryCollectionRequestParser.cs

@@ -35,6 +35,7 @@ public CommandCollection ParseRequestCommands(HttpContext context)
         {
             if (context.Request.Query.Count == 0 || !context.Request.Query.ContainsKey(QueryKey))
             {
+                // We return new here and below to ensure the collection is still mutable via events.
                 return new();
             }
 

src/ImageSharp.Web/Commands/QueryCollectionRequestParser.cs

@@ -18,6 +18,7 @@ public CommandCollection ParseRequestCommands(HttpContext context)
         {
             if (context.Request.Query.Count == 0)
             {
+                // We return new to ensure the collection is still mutable via events.
                 return new();
             }