add "Clear Cookies and Site Data" button to the "Control Center" menu

This is useful, some time I use this to clear one site rather than of the entire section

"Clear Cookies and Site Data" is accessible from "Page Info window" but putting this at "Control Center" will make this more easy to use

https://support.mozilla.org/en-US/kb/firefox-page-info-window?redirectlocale=en-US&redirectslug=Page+Info+window https://support.mozilla.org/en-US/kb/control-center-site-privacy-and-security-firefox

Trac:
Username: h1n1

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