Remove Desktop File Installation process

Same script, just simplifies it by putting everything in one shell script instead of a desktop installation.

0.1

Initial public release of AppImage Deck. Provides support for:

• Discord - all-in-one voice and text chat application
• Firefox - open source graphical web browser
• LibreOffice - Open Source personal productivity suite (Fresh Release Channel)
• OnlyOffice - Office suite that combines text, spreadsheet and presentation editors.
• Thunderbird - Open source email, news, and chat client
• Ungoogled Chromium - Google Chromium, sans integration with Google
• VSCodium - Free/Libre Open Source Software Binaries of VS Code