Added a way to check Block Size, Compression Method, and Compression Level flags to dolphin-tool

New dolphin-tool command: "header"
-b / --block_size
-c / --compression
-l / --compression_level

Informative RVZ/WIA header2 value "compression_level" is now a s32 instead of a u32, because negative compression is a thing.

Speaking of, it is now possible to use negative compression levels in dolphin-tool's convert command (not the GUI, though).

Source/Core/DolphinTool/HeaderCommand.h

@@ -0,0 +1,19 @@
+// Copyright 2022 Dolphin Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include <string>
+#include <vector>
+
+#include "DolphinTool/Command.h"
+
+namespace DolphinTool
+{
+class HeaderCommand final : public Command
+{
+public:
+  int Main(const std::vector<std::string>& args) override;
+};
+
+}  // namespace DolphinTool