Add missing Nikon3 makernote tag.
Add missing Nikon3 makernote tag.

Tons of them left to do.

punker76/taglib-sharp,CamargoR/taglib-sharp,hwahrmann/taglib-sharp,hwahrmann/taglib-sharp,punker76/taglib-sharp,archrival/taglib-sharp,Clancey/taglib-sharp,CamargoR/taglib-sharp,Clancey/taglib-sharp,archrival/taglib-sharp,Clancey/taglib-sharp,mono/taglib-sharp