* Fix icon directory setup for AppImage workflow
* Add application icon to Windows installer script
* Add StartupWMClass to JS8Call.desktop
* Implement code signing in CI for Windows builds
Added steps for code signing and certificate handling in CI workflow.
* Update and rename js8call.desktop to JS8Call-improved.desktop
Standardizing everything on JS8Call-improved
* Create ci-windows-installer.iss for INNO Setup
Designed to be run via the ci-windows build
* Overhaul ci-windows.yml towards release capability
* Update ci-linux.yml
* Update ci-macos.yml
* FFmpeg configure change for License issue
* FFmpeg configure change for License issue
* Fixes and work arounds for ffmpeg shared libraries.