docs: split Model page content into a Binding sub-page

Author: claude

docs/.vitepress/config.mjs

@@ -129,9 +129,9 @@ export default defineConfig({
           },
           {
             text: "Model",
-            link: "/development/model/model",
             collapsed: true,
             items: [
+              { text: "Binding", link: "/development/model/binding" },
               { text: "Tables, Trees", link: "/development/model/tables" },
               { text: "Device Model", link: "/development/model/device" },
               { text: "OData", link: "/development/model/odata" },

docs/development/model/model.md docs/development/model/binding.mddocs/development/model/model.md renamed to docs/development/model/binding.md

@@ -1,7 +1,7 @@
 ---
 outline: [2, 4]
 ---
-# Model
+# Binding
 
 In abap2UI5, there are two ways to share data between your ABAP code and the UI5 frontend.