Colored emoji support.

Also, this approach seems to have a memory leak while converting
QStringList to QVariant.

src/emojimodel.h

@@ -0,0 +1,43 @@
+#ifndef EMOJIMODEL_H
+#define EMOJIMODEL_H
+
+#include <QObject>
+#include <QVariant>
+
+class EmojiModel : public QObject {
+  Q_OBJECT
+  Q_PROPERTY(QVariant model READ getModel NOTIFY categoryChanged)
+  Q_PROPERTY(QString category READ getCategory WRITE setCategory NOTIFY
+                 categoryChanged)
+ public:
+  explicit EmojiModel(QObject *parent = nullptr);
+
+  QVariant getModel();
+
+  QString getCategory() { return m_category; }
+  void setCategory(QString category) {
+    if (category != m_category) {
+      m_category = category;
+      emit categoryChanged();
+    }
+  }
+
+ private:
+  static const QStringList people;
+  static const QStringList nature;
+  static const QStringList food;
+  static const QStringList activity;
+  static const QStringList travel;
+  static const QStringList objects;
+  static const QStringList symbols;
+  static const QStringList flags;
+
+  QString m_category = "people";
+
+ signals:
+  void categoryChanged();
+
+ public slots:
+};
+
+#endif  // EMOJIMODEL_H