Tvheadend (#17800)

* Add tvheadend (ct)

* Update Tvheadend installation messages in script

---------

Co-authored-by: push-app-to-main[bot] <203845782+push-app-to-main[bot]@users.noreply.github.com>
Co-authored-by: CanbiZ (MickLesk) <47820557+MickLesk@users.noreply.github.com>

install/tvheadend-install.sh

@@ -0,0 +1,46 @@
+#!/usr/bin/env bash
+
+# Copyright (c) 2021-2026 community-scripts ORG
+# Author: Nicolas Pastorello (opastorello)
+# License: MIT | https://github.com/community-scripts/ProxmoxVE/raw/main/LICENSE
+# Source: https://tvheadend.org/ | Github: https://github.com/tvheadend/tvheadend
+
+source /dev/stdin <<<"$FUNCTIONS_FILE_PATH"
+color
+verb_ip6
+catch_errors
+setting_up_container
+network_check
+update_os
+
+setup_deb822_repo \
+  "tvheadend" \
+  "https://dl.cloudsmith.io/public/tvheadend/tvheadend/gpg.C6CC06BD69B430C6.key" \
+  "https://dl.cloudsmith.io/public/tvheadend/tvheadend/deb/debian" \
+  "$(get_os_info codename)" \
+  "main"
+
+var_admin_user="${var_admin_user:-admin}"
+var_admin_pass="${var_admin_pass:-$(openssl rand -base64 18 | tr -dc 'a-zA-Z0-9' | cut -c1-13)}"
+
+msg_info "Installing Tvheadend"
+echo "tvheadend tvheadend/admin_username string ${var_admin_user}" | debconf-set-selections
+echo "tvheadend tvheadend/admin_password password ${var_admin_pass}" | debconf-set-selections
+$STD apt install -y tvheadend
+msg_ok "Installed Tvheadend"
+
+msg_info "Starting Service"
+systemctl enable -q --now tvheadend
+msg_ok "Started Service"
+
+msg_info "Saving Credentials"
+cat <<EOF >~/tvheadend.creds
+Tvheadend Admin Credentials
+Username: ${var_admin_user}
+Password: ${var_admin_pass}
+EOF
+msg_ok "Saved Credentials"
+
+motd_ssh
+customize
+cleanup_lxc