get title from inner html header title

# Feature Request

## Motivation Behind Feature

when i navigate to another page in this inappbrowser webview , it dynamic render toolbar title by the html header title tag。and i can know what page i navigate to

## Feature Description

like this:


## Alternatives or Workarounds

Start by reviewing the plugin's Android and iOS in-app browser navigation and toolbar title handling. Trace where the current page URL or title becomes the toolbar title, then verify the behavior on navigation to a page whose HTML title changes; done means the toolbar reflects that title on both supported mobile platforms.

Written by the indexing model from the issue text.