Add dependencies in preparation of move to esbuild.

package.json

@@ -24,15 +24,22 @@
   "devDependencies": {
     "@preact/preset-vite": "^2.5.0",
     "@types/babel__core": "^7.20.0",
+    "@types/node": "^18.15.11",
     "@types/webextension-polyfill": "^0.10.0",
     "ava": "^5.2.0",
     "c8": "^7.13.0",
+    "concurrently": "^8.0.1",
+    "cssnano": "^6.0.0",
+    "esbuild": "^0.17.15",
+    "esbuild-copy-static-files": "^0.1.0",
+    "esbuild-sass-plugin": "^2.8.0",
     "postcss": "^8.4.21",
     "sass": "^1.60.0",
     "stylelint": "^15.3.0",
     "stylelint-config-standard-scss": "^7.0.1",
     "trash-cli": "^5.0.0",
     "ts-node": "^10.9.1",
+    "tsx": "^3.12.6",
     "typescript": "^5.0.2",
     "vite": "^4.2.1",
     "vite-plugin-web-extension": "^3.0.2",