LibGfx: Register the mime type image/x-icon

Userland/Libraries/LibCore/MimeData.cpp

@@ -125,6 +125,7 @@ static Array const s_registered_mime_type = {
     MimeType { .name = "image/tinyvg"sv, .common_extensions = { ".tvg"sv }, .description = "TinyVG vector graphics"sv, .magic_bytes = Vector<u8> { 0x72, 0x56 } },
     MimeType { .name = "image/vnd.ms-dds"sv, .common_extensions = { ".dds"sv }, .description = "DDS image data"sv, .magic_bytes = Vector<u8> { 'D', 'D', 'S', ' ' } },
     MimeType { .name = "image/webp"sv, .common_extensions = { ".webp"sv }, .description = "WebP image data"sv, .magic_bytes = Vector<u8> { 'W', 'E', 'B', 'P' }, .offset = 8 },
+    MimeType { .name = "image/x-icon"sv, .common_extensions = { ".ico"sv }, .description = "ICO image data"sv },
     MimeType { .name = "image/x-portable-bitmap"sv, .common_extensions = { ".pbm"sv }, .description = "PBM image data"sv, .magic_bytes = Vector<u8> { 0x50, 0x31, 0x0A } },
     MimeType { .name = "image/x-portable-graymap"sv, .common_extensions = { ".pgm"sv }, .description = "PGM image data"sv, .magic_bytes = Vector<u8> { 0x50, 0x32, 0x0A } },
     MimeType { .name = "image/x-portable-pixmap"sv, .common_extensions = { ".ppm"sv }, .description = "PPM image data"sv, .magic_bytes = Vector<u8> { 0x50, 0x33, 0x0A } },