docs: version 1.16.0 (#782)

## 📜 Description

Added new docs version to dropdown list.

## 💡 Motivation and Context

This release has some features that are not available for older
versions. Let's highlight it.

## 📢 Changelog

<!-- High level overview of important changes -->
<!-- For example: fixed status bar manipulation; added new types
declarations; -->
<!-- If your changes don't affect one of platform/language below - then
remove this platform/language -->

### Docs

- add new docs version;

## 🤔 How Has This Been Tested?

Tested via preview.

## 📸 Screenshots (if appropriate):

<img width="368" alt="image"
src="https://github.com/user-attachments/assets/8b8b1bd9-c59a-43d2-b82f-147482efd37d"
/>

## 📝 Checklist

- [x] CI successfully passed
- [x] I added new mocks and corresponding unit-tests if library API was
changed

Author: kirillzyusko

docs/docusaurus.config.js

@@ -84,6 +84,9 @@ const config = {
             "1.15.0": {
               label: "1.15.0",
             },
+            "1.16.0": {
+              label: "1.16.0",
+            },
           },
         },
         blog: {

docs/versioned_docs/version-1.16.0/api/_category_.json

@@ -0,0 +1,8 @@
+{
+  "label": "API Reference",
+  "position": 4,
+  "link": {
+    "type": "generated-index",
+    "description": "API reference containing information about all public methods and their signatures"
+  }
+}