feat: add peerDependenciesMeta to package.json (#294)

* feat: add peerDependenciesMeta to package.json

* Create .changeset/moody-tools-visit.md

Author: ota-meshi

Diff for: .changeset/moody-tools-visit.md

@@ -0,0 +1,5 @@
+---
+"svelte-eslint-parser": minor
+---
+
+feat: add peerDependenciesMeta to package.json

Diff for: package.json

@@ -45,6 +45,11 @@
   "peerDependencies": {
     "svelte": "^3.37.0"
   },
+  "peerDependenciesMeta": {
+    "svelte": {
+      "optional": true
+    }
+  },
   "dependencies": {
     "eslint-scope": "^7.0.0",
     "eslint-visitor-keys": "^3.0.0",