added 5 addition blocks into group 2

Added a vanilla 1x2 slope corner block for heavy/light, small/large grids

added 4 more block shapes: half block with 45 degree corner, half block 1x2 part, inverted version of the 1x2, and a half block 45 degree corner block

Added Heavy Armor Variants of existing blocks

Updated a minor issue with 2 blocks build states not showing up properly, these include the large and small grid versions of the half block Half Slope Pt1 Corner 3a and the Half Block Half Slope Pt2 Corner 2