- epm-update: fix error code in epm-update

- epm play sublime: fix download URL
- epm repack: fix onlyoffice-desktopeditors

- add epm tool command for call embedded tools like eget or estrlist
- epm play yandex-browser-codecs-ffmpeg-extra: use eget for download
- use epm tool eget instead of EGET variable
- epm repack AppImage: fix path to AppRun
- epm repack: fix fix_chrome_sandbox return code
- epm play: chrome-remote-desktop.sh: disable script
- epm repack zoom: small improvements

- epm-sh-functions: fix which command detection (deb based distro related)

- add check for sed, which and grep commands
- drop extra requires

- epm install/repack: add AppImage support
- epm repack: drop using fakeroot during repack to rpm
- epm repack: set TMPDIR if missed, set _allow_root_build in temp. .rpmmacros
- epm play: add ktalk support
- epm repack: fix_chrome_sandbox: set 4711 permissions
- epm repack: fix error code
- epm play/repack: big rules cleanup
- epm play: add duplicati support
- epm play vivaldi: fix download (ALT bug 42477)