* Allow `--target install` to do build/install
* Generic program installation and simplify "only target"
* Update CI to call explicitly install step
* Rewrite install target name
* Add manually libsoci_sqlite3 in appimage as it cannot be done from binaries
- Add Signing info in CI : use Key for Linux, folder for Windows
- Update create appimage for takking account of key
- Use appimagetool in addition of linuxdeploy for code signing step if needed