phrases: support $NUMEN_DMENU and $DMENU
readme: add a see also section
readme: improve help
add link to model template in PACKAGING.md
update PACKAGING.md
readme: update
install: remove ./install-user-udev-rule.sh
install: overhaul vosk install and add musl script
add --verbose
add --audiolog
install: bump dotool to 1.2
make dmenu optional
phrases: change some phrases

"again" -> "more"
"return" -> "initial"
"cam transcribe" -> "camel scribe"
bump dependencies, vosk to 0.3.45
add --phraselog
improve --speechless
exit if the handler exits
make xdotool and xset optional