🔧(frontend) add meta information to package.json files

- Add missing repository, author, and license fields
- Add recommended packageManager

src/frontend/packages/eslint-plugin-docs/package.json

@@ -1,6 +1,8 @@
 {
   "name": "eslint-plugin-docs",
   "version": "3.6.0",
+  "repository": "https://github.com/suitenumerique/docs",
+  "author": "DINUM",
   "license": "MIT",
   "main": "index.js",
   "keywords": [
@@ -30,5 +32,6 @@
     "eslint-plugin-testing-library": "7.6.6",
     "eslint-plugin-vitest": "0.5.4",
     "prettier": "3.6.2"
-  }
+  },
+  "packageManager": "yarn@1.22.22"
 }

src/frontend/packages/i18n/package.json

@@ -1,6 +1,9 @@
 {
   "name": "packages-i18n",
   "version": "3.6.0",
+  "repository": "https://github.com/suitenumerique/docs",
+  "author": "DINUM",
+  "license": "MIT",
   "private": true,
   "scripts": {
     "extract-translation": "yarn extract-translation:impress",
@@ -21,5 +24,6 @@
     "ts-jest": "29.4.1",
     "typescript": "*",
     "yargs": "18.0.0"
-  }
+  },
+  "packageManager": "yarn@1.22.22"
 }