feat: add "typecheck" script using tsgo (typescript-go)

Author: jdalton

package.json

@@ -57,6 +57,7 @@
     "publish:ci": "node scripts/publish.mts --tag ${DIST_TAG:-latest}",
     "claude": "node scripts/claude.mts",
     "test": "node scripts/test.mts",
+    "typecheck": "tsgo --noEmit",
     "type": "tsgo --noEmit -p .config/tsconfig.check.json",
     "update": "node scripts/update.mts",
     "update:data:npm": "node scripts/update-data-npm.mts"