* [Client] Route cockatrice:// link clicks from chat to the intent chain
A cockatrice:// link clicked in chat is currently handed to the OS (or
does nothing in-process). Clicks now emit a cockatriceLinkActivated signal
that travels ChatView -> Tab -> TabSupervisor -> MainWindow, which feeds
the URL through the same IntentUrlParser the OS activation path uses, so
the join runs entirely in-process. card/user schemes and all other links
behave as before.
* [Client] Route cockatrice:// link clicks from the in-game chat to the intent chain
* [Client] Reuse one IntentUrlParser instance for cockatrice:// links
Took 59 seconds
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Co-authored-by: Lukas Brübach <Bruebach.Lukas@bdosecurity.de>