[loader] add ZBIC (zstd variant) NSO decompression support for Switch 22.0+

src/common/zbic_compression.h

@@ -0,0 +1,18 @@
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#pragma once
+
+#include <span>
+#include <vector>
+#include "common/common_types.h"
+
+namespace Common::Compression {
+
+[[nodiscard]] bool IsZBIC(const void* src, size_t src_size);
+
+[[nodiscard]] std::vector<u8> DecompressDataZBIC(std::span<const u8> compressed, std::size_t uncompressed_size);
+
+[[nodiscard]] int DecompressDataZBIC(void* dst, size_t dst_size, const void* src, size_t src_size);
+
+} // namespace Common::Compression