Add DetailNormalMap and DetailAlbedoTexture to PBSDualSideMetaric

[Fukuro99]

Is your feature request related to a problem? Please describe.

PBSDualSideMetaric does not have the DetailNormalMap and DetailAlbedoTexture items, so it is difficult to achieve the same expression as PBSMetaric.

PBSMetaric does not display the back of the mesh when there is only one side, so we would like to use PBSDualSideMetaric, but PBSDualSideMetaric lacks the above items, so it cannot be used for certain purposes.

Describe the solution you'd like

PBSDualSideMetaricにDetailNormalMapとDetailAlbedoTextureを追加します

Describe alternatives you've considered

I either give up or make the mesh double-sided to deal with the problem. However, I don't want to use double-sided because it increases the load.

Additional Context

No response

Requesters

Discord:fukuro8232

[kulzae]

Will likely be fixed by #1576

[Fukuro99]

I hope it will be implemented soon

[shiftyscales]

Assigning #1576 as a parent issue for now- I believe that the PBS shader consolidation should implicitly add this, but I wish for input from @Geenz before I close this issue.