NOISSUE Allow Technic pack API urls to be used in search

This mimics the behaviour that the Technic launcher has, and their
website displays API URLs for.

The big benefit of this, is to be able to install private packs now :)

launcher/ui/pages/modplatform/technic/TechnicModel.h

@@ -1,4 +1,5 @@
 /* Copyright 2020-2021 MultiMC Contributors
+ * Copyright 2021 Jamie Mansfield <jmansfield@cadixdev.org>
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -63,6 +64,10 @@ private:
         ResetRequested,
         Finished
     } searchState = None;
+    enum SearchMode {
+        List,
+        Single,
+    } searchMode = List;
     NetJob::Ptr jobPtr;
     QByteArray response;
 };