several issues with voicemail

[barianiluca]

trafficstars

Describe the bug The installer on debian 11 lts, has several wrong on the activation of voicemail

To Reproduce Try to install the latest magnus billing on a clean debian 11 lts so

Expected behavior voicemail should works out of box, but doesn't

Screenshots not applicable

Additional context what i see till now is:

• from the installer missing the installation of these packages (related to debian 11): apt-get install -y libmariadb-dev libmariadbd-dev default-libmysqlclient-dev default-libmysqld-dev
• two fields related to the views "pkg_voicemail_users" has a wrong type: voicemail_password (from int(11) to char) and uniquieid (from 0 long to 11 long)
• the views also have a problem on a field defined as billing AS context that should be mbilling.pkg_sip.context

I think that these fixed should be done on the installer script (at least on debian 11 side)