Define Cockatrice as an editor/handler for .cod files and cockatrice:// protocol on all platforms (#6775)

* [Application] Add single instance guard and mime types.

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* Rework

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* Only enforce single instance if launched with arguments.

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* Prototype intents

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* Connect/disconnect and join game/room intents.

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* Fix include.

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* Mac handling.

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* Lint.

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* Rebase.

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* Implement UrlSchemeEventFilter

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* Qt Moc

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* Modern PList.

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* Debug output.

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* Watch file:// prefix.

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* Better handler.

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* Don't store reference in member

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* Move impl to cpp, fix lifetime issues.

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* Better single-instance handoff, url intent harded

copy game link context-menu
Polish for installers

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Co-authored-by: Lukas Brübach <Bruebach.Lukas@bdosecurity.de>

libcockatrice_network/libcockatrice/network/client/abstract/abstract_client.h

@@ -122,6 +122,20 @@ public:
         return userName;
     }
 
+    /**
+     * @brief Returns the server address configured for the current connection.
+     *
+     * May be empty for clients that have no server counterpart (e.g. local test clients).
+     */
+    virtual QString serverName() const
+    {
+        return {};
+    }
+    virtual quint16 serverPort() const
+    {
+        return 0;
+    }
+
     static PendingCommand *prepareSessionCommand(const ::google::protobuf::Message &cmd);
     static PendingCommand *prepareRoomCommand(const ::google::protobuf::Message &cmd, int roomId);
     static PendingCommand *prepareModeratorCommand(const ::google::protobuf::Message &cmd);

libcockatrice_network/libcockatrice/network/client/remote/remote_client.h

@@ -131,6 +131,22 @@ public:
             return socket->peerName();
         }
     }
+    quint16 peerPort() const
+    {
+        if (usingWebSocket) {
+            return websocket->peerPort();
+        } else {
+            return socket->peerPort();
+        }
+    }
+    QString serverName() const override
+    {
+        return lastHostname;
+    }
+    quint16 serverPort() const override
+    {
+        return static_cast<quint16>(lastPort);
+    }
     void
     connectToServer(const QString &hostname, unsigned int port, const QString &_userName, const QString &_password);
     void registerToServer(const QString &hostname,