Refactor base model: chain stitch

[simcard0000]

TO-DO:

• See "Information Required for Base Models" in the Design Decisions and Planning document.
• Put your base model into crochet-stitcher.
• You may need to play around in Blender to determine what the base model should look like.

@AltheFlyer you already this ^ but just refactor into the crochet-stitcher.

Warning to reviewers: this will likely come with some extra junk/tools to rotate/scale the chain stitch

[linear[bot]]

SE490-101 Make base model: single stitch crochet