Create an empty default welcome file

_Originally posted by @ann0see in https://github.com/jamulussoftware/jamulus/pull/3194#pullrequestreview-1970350884_

I'd not do it this way.
Modify the files in this folder instead: https://github.com/jamulussoftware/jamulus/tree/main/linux/debian
Add an empty .html file to the directory.

Add the empty file here: https://github.com/jamulussoftware/jamulus/blob/main/linux/debian/jamulus.install and here: https://github.com/jamulussoftware/jamulus/blob/main/linux/debian/jamulus-headless.install

Maybe you'd also need to edit https://github.com/jamulussoftware/jamulus/blob/main/linux/deploy_deb.sh

Inizia leggendo linux/debian/jamulus.install e linux/debian/jamulus-headless.install, quindi esamina linux/deploy_deb.sh e la struttura esistente del pacchetto Debian. Aggiungi le voci richieste per i file HTML vuoti e verifica che entrambe le varianti del pacchetto vengano compilate includendo il file di benvenuto predefinito previsto.

Scritto dal modello di indicizzazione a partire dal testo della issue.