fix: add missing peer dependency typescript (#39)

Co-authored-by: Haoqun Jiang <haoqunjiang@gmail.com>

Author: merceyz

package.json

@@ -41,7 +41,13 @@
   },
   "peerDependencies": {
     "eslint": "^6.2.0 || ^7.0.0 || ^8.0.0",
-    "eslint-plugin-vue": "^9.0.0"
+    "eslint-plugin-vue": "^9.0.0",
+    "typescript": "*"
+  },
+  "peerDependenciesMeta": {
+    "typescript": {
+      "optional": true
+    }
   },
   "dependencies": {
     "@typescript-eslint/eslint-plugin": "^5.0.0",