Utilities: Add new utility for converting images to raw bitmap binaries

I used this utility to check if the possible TGA images' cases for
different origins (explictly the Y origin) are generating the same
bitmap, as I felt that my eyes are not a good-enough measurement tool
for this kind of task.
This might be useful in the future for testing other implementations so
I rather have this nice utility in our codebase.

Base/usr/share/man/man1/image2bin.md

@@ -0,0 +1,23 @@
+## Name
+
+image2bin - convert an image to a binary bitmap
+
+## Synopsis
+
+```**sh
+$ image2bin <path-to-image>
+```
+
+## Description
+
+`image2bin` uses LibGfx to decode a specified image to a raw bitmap, so it could be stored
+in a raw binary format for further examination.
+
+## Examples
+
+```sh
+# Convert a PNG image to raw bitmap
+$ image2bin example.png > example.bin
+# Convert a JPG image to raw bitmap
+$ image2bin another_example.jpg > another_example.bin
+```

Userland/Utilities/CMakeLists.txt

@@ -91,6 +91,7 @@ target_link_libraries(gunzip PRIVATE LibCompress)
 target_link_libraries(gzip PRIVATE LibCompress)
 target_link_libraries(headless-browser PRIVATE LibCrypto LibGemini LibGfx LibHTTP LibTLS LibWeb LibWebSocket LibIPC LibJS)
 target_link_libraries(icc PRIVATE LibGfx)
+target_link_libraries(image2bin PRIVATE LibGfx)
 target_link_libraries(jail-attach PRIVATE LibCore LibMain)
 target_link_libraries(jail-create PRIVATE LibCore LibMain)
 target_link_libraries(js PRIVATE LibCrypto LibJS LibLine LibLocale LibTextCodec)

Userland/Utilities/image2bin.cpp

@@ -0,0 +1,39 @@
+/*
+ * Copyright (c) 2023, Liav A. <liavalb@hotmail.co.il>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include <AK/DeprecatedString.h>
+#include <AK/Random.h>
+#include <AK/StringBuilder.h>
+#include <LibCore/ArgsParser.h>
+#include <LibCore/DirIterator.h>
+#include <LibCore/System.h>
+#include <LibGUI/Application.h>
+#include <LibGUI/Desktop.h>
+#include <LibMain/Main.h>
+
+ErrorOr<int> serenity_main(Main::Arguments arguments)
+{
+    TRY(Core::System::pledge("stdio rpath unix"));
+    DeprecatedString path;
+
+    Core::ArgsParser args_parser;
+    args_parser.add_positional_argument(path, "Path to image", "path");
+    args_parser.parse(arguments);
+
+    auto bitmap = TRY(Gfx::Bitmap::try_load_from_file(path));
+
+    TRY(Core::System::pledge("stdio"));
+    Vector<u8> data;
+    for (auto height = 0; height < bitmap->size().height(); height++) {
+        auto* scanline = bitmap->scanline_u8(height);
+        for (auto byte_index_in_row = 0u; byte_index_in_row < bitmap->pitch(); byte_index_in_row++) {
+            TRY(data.try_append(scanline[byte_index_in_row]));
+        }
+    }
+    VERIFY(data.size() == bitmap->size_in_bytes());
+    TRY(Core::System::write(STDOUT_FILENO, data.span()));
+    return 0;
+}