web_chatter_position - Implement Button to Swap Chatter Position on the Fly

[rfindling-gpc]

Is your feature request related to a problem?
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Chatter position can currently be configured in the user settings, but there are sometimes when you want chatter to be on the side or on the bottom without modifying your settings. Another app implemented a button to do this functionality.
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Add a button like shown on this app: https://apps.odoocdn.com/apps/assets/14.0/ob_chatter_position/images/chatter_position.gif?74c99f2
Describe alternatives you've considered
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Additional context
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See GIF