Vertical lines in nested itemize environment

Question

Looking to add vertical lines that separates the head levels in nested itemize environment as shown in the image.

There is a similar question here. But I want to keep the bullets as shown in the image.

Here's a MWE:

\documentclass{article}
\usepackage{graphicx} % Required for inserting images
\begin{document}
\section{Introduction}
\begin{itemize}
\item Head Level 1: some text some text some text some text some text some text some 
 text some text some text some text some text some text some text
\begin{itemize}
    \item Sub-level 1: some text some text some text some text some text some text some text some text some text some text some text some text
\begin{itemize}
    \item subsub-level 1: some text some text some text some text some text some text some text some text some text some text some text 
\end{itemize}


\end{itemize}
\item Head Level 2: some text some text some text some text some text some text some text some text some text some text some text some text some text
\begin{itemize}
    \item Sub-level 2: some text some text some text some text some text some text some text some text some text some text some text some text some text
\begin{itemize}
    \item subsub-level 2: some text some text some text some text some text some text some text some text some text some text some text some text some text 
\end{itemize}


\end{itemize}
\end{itemize}
\end{document}