Initial release

• GUI input fields aligns with accepted CLI arguments
• GUI includes internationalisation support for multiple languages (i.e. English, Hindi, Deutsch, Espanol, Mandarin)
• GUI includes button to change colour theme
• GUI includes button to toggle full screen for accessibility
• Flask API aligns with CLI arguments to allow other developers to plugin different front-ends
• Downloaded files are stored within the subdirectory name specified, which is inside the 'downloads' directory of the root project directory (i.e. /downloads/<specified_subdirectory/<downloaded_files>)
• Automatically opens the folder containing downloaded files upon download completion