chore: update packages' (vite, vite-legacy) keywords (#11402)

Author: PengBoUESTC

packages/plugin-legacy/package.json

@@ -6,6 +6,12 @@
   "files": [
     "dist"
   ],
+  "keywords": [
+    "frontend",
+    "vite",
+    "vite-plugin",
+    "@vitejs/plugin-legacy"
+  ],
   "main": "./dist/index.cjs",
   "module": "./dist/index.mjs",
   "types": "./dist/index.d.ts",

packages/vite/package.json

@@ -8,6 +8,14 @@
   "bin": {
     "vite": "bin/vite.js"
   },
+  "keywords": [
+    "frontend",
+    "framework",
+    "hmr",
+    "dev-server",
+    "build-tool",
+    "vite"
+  ],
   "main": "./dist/node/index.js",
   "module": "./dist/node/index.js",
   "types": "./dist/node/index.d.ts",