Fix copy-paste package name collision in create-poly

create-poly/deno.json declared @hyperpolymath/rescript-poly-core — the
name already owned by packages/core/poly-core — so Deno rejected the
workspace once the cadre duplicates were removed (it only reports one
collision at a time). The file was clearly copied from poly-core. Rename
the package to @hyperpolymath/rescript-create-poly. This was the last
duplicate package name in the workspace.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_019i2e5ABGBKQmMdqk8puFWx

Author: hyperpolymath

rescript-ecosystem/packages/tooling/create-poly/deno.json

@@ -1,5 +1,5 @@
 {
-  "name": "@hyperpolymath/rescript-poly-core",
+  "name": "@hyperpolymath/rescript-create-poly",
   "version": "0.1.0",
   "exports": "./src/PolyCore.res.js",
   "tasks": {