[DeckEditor] Use CommanderSpellbook.com to estimate bracket if format is 'commander' (#6415)

* [DeckEditor] Use CommanderSpellbook.com to estimate bracket if format is 'commander'

Took 2 minutes

Took 16 minutes

* Convert json data holder to structs, rename variables, extract widget

- Extract bracket estimation UI from DeckEditorDeckDockWidget into a
  new CommanderBracketWidget
- Move CommanderSpellbook integration settings from CardsDisplaySettings
  to DeckEditorSettings (matching the settings refactor on master)
- Rename CommanderSpellbook integration variables to drop the redundant
  'DeckEditor' prefix

Took 4 minutes

# Commit time for manual adjustment:
# Took 6 minutes

# Commit time for manual adjustment:
# Took 8 minutes

---------

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

libcockatrice_settings/libcockatrice/settings/commander_bracket_settings.h

@@ -0,0 +1,56 @@
+#ifndef COMMANDER_BRACKET_SETTINGS_H
+#define COMMANDER_BRACKET_SETTINGS_H
+
+#include "settings_manager.h"
+
+#include <QHash>
+#include <QObject>
+#include <QString>
+#include <QVariantList>
+
+struct CommanderBracketDefinition
+{
+    QString tag;
+
+    QString officialName;
+    QString displayName;
+
+    QString explanation;
+};
+
+class CommanderBracketSettings : public SettingsManager
+{
+    Q_OBJECT
+    friend class SettingsCache;
+
+public:
+    static constexpr int CurrentSchemaVersion = 1;
+
+    static QVariantList defaultDefinitions();
+
+    void clearDefinitions();
+
+    void saveDefinitions(const QVariantList &definitions);
+
+    QVariantList loadDefinitions() const;
+
+    void reloadDefinitions(const QVariantList &definitions);
+
+    QString officialName(const QString &tag) const;
+    QString displayName(const QString &tag) const;
+    QString explanation(const QString &tag) const;
+    bool contains(const QString &tag) const;
+
+    void setSchemaVersion(int version);
+    int getSchemaVersion() const;
+
+private:
+    explicit CommanderBracketSettings(const QString &settingPath, QObject *parent = nullptr);
+
+    CommanderBracketSettings(const CommanderBracketSettings &) = delete;
+    CommanderBracketSettings &operator=(const CommanderBracketSettings &) = delete;
+
+    QHash<QString, CommanderBracketDefinition> definitions;
+};
+
+#endif // COMMANDER_BRACKET_SETTINGS_H