Utilities: Add basic Package manager skeleton utility

Userland/Utilities/pkg/InstalledPort.h

@@ -0,0 +1,51 @@
+/*
+ * Copyright (c) 2023, Liav A. <liavalb@hotmail.co.il>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <AK/HashMap.h>
+#include <AK/String.h>
+#include <AK/StringView.h>
+#include <AK/Types.h>
+
+class InstalledPort {
+public:
+    enum class Type {
+        Auto,
+        Dependency,
+        Manual,
+    };
+
+    static ErrorOr<HashMap<String, InstalledPort>> read_ports_database();
+    static ErrorOr<void> for_each_by_type(HashMap<String, InstalledPort>&, Type type, Function<ErrorOr<void>(InstalledPort const&)> callback);
+
+    InstalledPort(String name, Type type, String version)
+        : m_name(name)
+        , m_type(type)
+        , m_version(move(version))
+    {
+    }
+
+    Type type() const { return m_type; }
+    StringView type_as_string_view() const
+    {
+        if (m_type == Type::Auto)
+            return "Automatic"sv;
+        if (m_type == Type::Dependency)
+            return "Dependency"sv;
+        if (m_type == Type::Manual)
+            return "Manual"sv;
+        VERIFY_NOT_REACHED();
+    }
+
+    StringView name() const { return m_name.bytes_as_string_view(); }
+    StringView version() const { return m_version.bytes_as_string_view(); }
+
+private:
+    String m_name;
+    Type m_type;
+    String m_version;
+};