feat: initial commit for media tracking software

- Setup C++/Qt6 desktop application structure
- Added initial Go proxy backend for TMDB/IGDB integration

src/providers/AniListProvider.h

@@ -0,0 +1,25 @@
+#pragma once
+
+#include "providers/MetadataProvider.h"
+
+class QNetworkAccessManager;
+
+namespace umt {
+
+// AniList GraphQL provider for Manga (and could serve Anime).
+// No API key required.
+class AniListProvider : public MetadataProvider {
+    Q_OBJECT
+public:
+    explicit AniListProvider(QObject *parent = nullptr);
+
+    QString name() const override { return QStringLiteral("AniList"); }
+    bool supports(MediaType type) const override { return type == MediaType::Manga; }
+
+    void search(const QString &query, MediaType type) override;
+
+private:
+    QNetworkAccessManager *m_nam;
+};
+
+} // namespace umt