Fix plane, p2p, terminal item models

[serenibyss]

Several parts (Formation/Annihilation Planes, Terminals, P2Ps) had incorrect item models

Some examples of old:

Side and front textures incorrect:

Formation plane with wrong back and side textures:

P2P with no backplate model:

Terminal with wrong thickness as item (in hand):

Some examples of new:

Front and side textures corrected:
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Formation plane with proper back and side textures:

P2P with backplate model:

Terminal with correct thickness and texturing (in hand):

[shartte]

Good find, good fix. Thank you!