feat(api): replace uwsgi with gunicorn (#1785)

Related to #1719

BREAKING: The uwsgi packages and configuration files (`/etc/airtime/libretime-api.ini`) should be removed from the system.

install

@@ -1046,10 +1046,6 @@ verbose "...Done"
 verbose "\n * Installing API..."
 loudCmd "$pip_install ${AIRTIMEROOT}/api[prod]"
 systemInitInstall libretime-api "$web_user"
-mkdir -p /etc/airtime
-sed -e "s@WEB_USER@${web_user}@g" \
-  -e "s@WEB_ROOT@${web_root}@g" \
-  "${AIRTIMEROOT}/api/install/uwsgi/libretime-api.ini" > /etc/airtime/libretime-api.ini
 verbose "...Done"
 
 verbose "\n * Setting permissions on /var/log/libretime..."