Updating the Prim Ref page

[Gerald Lasser]

Missing rectilinear (also needing a render)

triangle.dat (Added to two dimensional - 01.12.2023 by Willy)
box4-12 (Added to three dimensional - 01.12.2023 by Willy)
box4-5a (Added to three dimensional - 01.12.2023 by Willy)
box3u6a (Added to three dimensional - 01.12.2023 by Willy)
tri3-1 (Added to three dimensional - 01.12.2023 by Willy)
tri3-3 (Added to three dimensional - 01.12.2023 by Willy)
tri3a3 (Added to three dimensional - 01.12.2023 by Willy)
tri4 (Added to three dimensional - 01.12.2023 by Willy)

How box3#8p ever made it into the wild is weird to me

Circular Primitives:

Flat ones:
- Edge (16): I added 13-16
- Edge (48): I added 11-48

- Disc (48) : I added 1-24, 5-24
- chrd (48) : I added the missing ones, 5-48, 11-48, 1-4, 5-16, 5-12, 11-24, 2-4

Currently undocumented:

EDGH:
CYLH:
-> Those are also not being prim-substituted by LDView, maybe Travis needs to have a look here

Most of the standard ones are there, may be we should just complete them (some tang and hires are missing)

Rings are a very different story...