Size of texture assets not reported correctly when sorting by Importer Type

[benobikoya]

Just looked at a build report and the reported size of all texture assets is enormous and obviously incorrect.

See the Total Size and then compare with the size reported for textures in the above picture.

I hope this can be helpful to someone, as this package is quite handy. I'm using version 0.2.2 with Unity 2019.3.7f1 running on MacOS.