Add timer to remount /etc/resolv.conf if it has changed

[lucas-stauder]

Issue Description

Distrobox is not updating host files for containers which have an init system.

Steps to Reproduce

• Switch Networks so the content on of resolv.conf on the host changes
• check in vso-pico, didn't update

On what version of Vanilla OS this happens?

Unreleased

Additional Information

Add sysdtimer to run the following script every 15s or so

#!/bin/bash

# Path to the original and target files
SOURCE_FILE="/run/host/etc/resolv.conf"
TARGET_FILE="/etc/resolv.conf"

# Check if the files are different
if ! diff "${SOURCE_FILE}" "${TARGET_FILE}" > /dev/null; then
        echo "remounting..."
        # Unmount the target file if mounted
        umount "$TARGET_FILE"
        # Bind mount the source file to the target location
        mount --bind "$SOURCE_FILE" "$TARGET_FILE"
else
        echo "everything fine"
fi