Add the dependency files.

package.json

@@ -0,0 +1,50 @@
+{
+  "private": true,
+  "type": "module",
+  "dependencies": {
+    "@holllo/migration-helper": "^0.1.4",
+    "@holllo/preact-components": "^0.2.3",
+    "@holllo/test": "^0.2.1",
+    "@holllo/webextension-storage": "^0.2.0",
+    "htm": "^3.1.1",
+    "modern-normalize": "^2.0.0",
+    "preact": "^10.15.1",
+    "shepherd.js": "^11.1.1",
+    "webextension-polyfill": "^0.10.0"
+  },
+  "devDependencies": {
+    "@bauke/eslint-config": "^0.1.2",
+    "@bauke/prettier-config": "^0.1.2",
+    "@bauke/stylelint-config": "^0.1.2",
+    "@types/node": "^20.3.0",
+    "@types/webextension-polyfill": "^0.10.0",
+    "concurrently": "^8.2.0",
+    "cssnano": "^6.0.1",
+    "esbuild": "^0.18.0",
+    "esbuild-copy-static-files": "^0.1.0",
+    "esbuild-sass-plugin": "^2.9.0",
+    "postcss": "^8.4.24",
+    "sass": "^1.63.3",
+    "stylelint": "^15.7.0",
+    "stylelint-config-standard-scss": "^9.0.0",
+    "trash-cli": "^5.0.0",
+    "tsx": "^3.12.7",
+    "typescript": "^5.1.3",
+    "web-ext": "^7.6.2",
+    "xo": "^0.54.2"
+  },
+  "prettier": "@bauke/prettier-config",
+  "stylelint": {
+    "extends": "@bauke/stylelint-config"
+  },
+  "xo": {
+    "extends": "@bauke/eslint-config",
+    "prettier": true,
+    "rules": {
+      "@typescript-eslint/consistent-type-definitions": "off",
+      "n/file-extension-in-import": "off",
+      "no-await-in-loop": "off"
+    },
+    "space": true
+  }
+}