docs: mention 1.22 features (#1536)

## 📜 Description

Add keywords + readme description.

## 💡 Motivation and Context

Somehow I forgot to include these changes in initial
https://github.com/kirillzyusko/react-native-keyboard-controller/pull/1409
PR 🙈

## 📢 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 keywords to `package.json`
- add new feature to README

## 🤔 How Has This Been Tested?

Tested via preview.

## 📸 Screenshots (if appropriate):

<img width="868" height="761" alt="image"
src="https://github.com/user-attachments/assets/4caf14cb-cdb9-4299-90de-9c6dc9cfa3db"
/>

## 📝 Checklist

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