chore: added missing fields in package.json

package.json

@@ -1,6 +1,24 @@
 {
   "name": "it-tools",
   "version": "2.5.1",
+  "description": "Collection of handy online tools for developers, with great UX. ",
+  "keywords": [
+    "productivity",
+    "converter",
+    "website",
+    "vuejs",
+    "tools",
+    "frontend",
+    "tool",
+    "developer-tools",
+    "developer-productivity"
+  ],
+  "author": "Corentin Th <corentin.thomasset74+it-tools@gmail.com> (https://github.com/CorentinTh)",
+  "license": "GNU GPLv3",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/CorentinTh/it-tools"
+  },
   "scripts": {
     "dev": "vite",
     "build": "vue-tsc --noEmit && vite build",