Convert SIXEL to UBRL6

The SIXEL, or "six pixels", is a bitmap graphics format created by Digital Equipment Corporation (DEC) for their terminals and printers. Initially designed for DEC dot matrix printers like the LA50, it enabled the efficient transfer of bitmap graphics using a series of ASCII characters. Each character represents a 6-pixel high row, making it suitable for 7-bit serial communication. This format was later adapted for modern terminal emulators, extending its utility beyond its original scope.

The UBRL6 file extension, short for Unicode Braille 6 Dots, is a text encoding format that uses a 6-dot braille cell to represent characters, symbols, and punctuation marks. It enables the conversion of text into a tactile code system, facilitating reading for individuals with visual impairments. UBRL6 supports both uncontracted and contracted braille fonts and leverages Unicode to cover a wide range of characters from different writing systems. This format is particularly useful for developers and organizations working on accessibility solutions.