feat(docs): add structured output example and details

package.json

@@ -1,6 +1,6 @@
 {
   "name": "simple-ai-provider",
-  "version": "1.1.2",
+  "version": "1.2.0",
   "description": "A simple and extensible AI provider package for easy integration of multiple AI services",
   "main": "dist/index.js",
   "module": "dist/index.mjs",
@@ -40,7 +40,10 @@
     "nodejs",
     "openwebui",
     "llm",
-    "unified-api"
+    "unified-api",
+    "structured-output",
+    "response-types",
+    "type-safe"
   ],
   "author": "Jan-Marlon Leibl",
   "license": "MIT",