Add xxhash-wasm w/ npm auto-update

* Add xxhash-wasm w/ npm auto-update

* Update xxhash-wasm.json

packages/x/xxhash-wasm.json

@@ -0,0 +1,29 @@
+{
+    "name": "xxhash-wasm",
+    "filename": "xxhash-wasm.js",
+    "description": "A WebAssembly implementation of xxHash, a fast non-cryptographic hash algorithm.",
+    "keywords": [
+      "xxhash",
+      "hash",
+      "wasm",
+      "webassembly"
+    ],
+    "license": "MIT",
+    "autoupdate": {
+      "source": "npm",
+      "target": "xxhash-wasm",
+      "fileMap": [
+        {
+          "basePath": "",
+          "files": [
+            "{,umd/,esm/,cjs/,workerd/}*@(.js?(.map)|.wasm|.d.ts)"
+          ]
+        }
+      ]
+    },
+    "repository": {
+      "type": "git",
+      "url": "https://github.com/jungomi/xxhash-wasm"
+    }
+  }
+