fix: add vue and @vue/compiler-sfc to optional peerDependencies

Closes vuejs#1944
Should also closes pnpm/pnpm#4941

Author: haoqunjiang

package.json

@@ -40,6 +40,14 @@
   "peerDependencies": {
     "webpack": "^4.1.0 || ^5.0.0-0"
   },
+  "peerDependenciesMeta": {
+    "@vue/compiler-sfc": {
+      "optional": true
+    },
+    "vue": {
+      "optional": true
+    }
+  },
   "devDependencies": {
     "@babel/core": "^7.7.7",
     "@babel/preset-env": "^7.11.5",