build: Add "type" and "exports" to package.json

Update test module paths for "type": "module" in package.json

Author: thewtex

package.json

@@ -2,7 +2,7 @@
   "name": "@thewtex/zstddec",
   "version": "0.1.2",
   "description": "ZSTD (Zstandard) decoder for Web and Node.js, using WebAssembly",
-  "repository": "github:thewtex/zstddec-wasm",
+  "repository": "github:donmccurdy/zstddec",
   "type": "module",
   "exports": {
     "types": "dist/zstddec.d.ts",