Add toggle "Data Saver" and "Low Power" modes as options for Customize Toolbar configuration

On mobile, I'd like to be able to add a button for Data Saver and Low Power Modes in my toolbar to make them quickly accessible.

To be explicit:

Settings > Browsing > Data Saver Mode
Settings > Browsing > Low Power Mode

I would like these to be options within:

Settings > Appearance > Customize Toolbar > Available Items

I'd like to use these modes more often and quickly toggle these from my toolbar.