Publish Nerbus source snapshot and build documentation

wallet_store.h

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+#pragma once
+#include <QtCore>
+#include <array>
+
+inline const QString NrbGenesis = QStringLiteral("0177ee4010f9617feb8e2956aa4dfb7a8df18b6e4f6cc3359bdb8cfef9d10bfd");
+void wipe(QByteArray &bytes);
+[[noreturn]] void walletError(const QString &message);
+QJsonObject offlineCore(QJsonObject request);
+
+class WalletStore {
+    QString filename;
+    unsigned char *key = nullptr;
+    bool plainOpen = false;
+    QByteArray salt;
+    QByteArray plaintext;
+    QJsonObject decrypt(const QByteArray &file, QByteArray &password, unsigned char *outKey, QByteArray &outSalt);
+    void save(const QJsonObject &data);
+public:
+    explicit WalletStore(QString path);
+    ~WalletStore();
+    bool exists() const;
+    bool unlocked() const { return key != nullptr || plainOpen; }
+    bool passwordProtected() const { return key != nullptr; }
+    static bool fileRequiresPassword(const QString &path);
+    QString path() const { return filename; }
+    void create(QByteArray password);
+    void unlock(QByteArray password);
+    void changePassword(QByteArray password);
+    void lock();
+    QJsonArray entries() const;
+    QString addKey(const QJsonObject &pair, const QString &label);
+    void backup(const QString &destination) const;
+    void restore(const QString &source, QByteArray password);
+};