LocalMesh Engine 1.0.0

The engine as first published, tagged after the fact so that later releases have
something to be measured against.

One photograph, or four sides of one subject, into a textured .glb on a single
NVIDIA card with 8 GB of memory, with no generation service in the loop.

python -m localmesh_engine face.png --right right.png --left left.png --back back.png --to out/

The README
covers what this adds to TRELLIS.2, and
docs/INSTALL.md
is the install guide. Weights live on
Hugging Face.

The engine is versioned on its own. LocalMesh, the application built on it, has
its own numbering; there is no correspondence to read into the two.