UI and Bug Fix Update

• Replaced Speed Dial with Bottom Modal Sheet
• Fixed issue where grid buttons could not be clicked
• Fixed shared_preferences error when switching themes
• Significantly increased size of buttons and font size of text in the main grid when running on desktop platforms
• About window now shows device platform too when running web version
• Shows hand cursor onHover on web and desktop
• Added screenshots to be displayed when installing as a PWA
• Updated app description and name in web previews and windows builds
• Updated metadata for windows builds