I can’t speak for @mano-wii. The line part of the add-on is integrated in Blender. You can activate it in the add-on page. It’s not perfect and is probably not developed anymore, but I use it often. The other parts are nowhere to be seen.
There is a similar add-on called Construction Lines that may or may not be new to you. It’s similar to the full CAD Snap Utilities and with version 0.9.5 that is soon to be released, Construction Lines will probably cover a lot of your needs in a easy way. You can find it in this forum on this page.
As for CAD Snap Utilities, I would love to see it being developed as a add-on or a part of Blender, but it does not seam lightly.