Vidtuber 1.1.1

Changes to Vidtuber 1.1.1:

- Fixed issue on wizard dialog where the Next button was disabled when not required
- Improved wizard UI.
- Fixed pyproject.toml file to include only essential data in the source archive
- Added User Guide files to "docs/UserGuide" in pdf format (work in progress).
- Fixed issue on "Downloader Messages Monitoring" where the Stop button was incorrectly disabled.
- Fixed missing icon issue for application launch on Ubuntu using deb package from PPA. This was fixed by upgrading to the Ubuntu "Noble" series for application build.