Add support for the new storage access permission

[Mugurell]

mozilla-mobile/android-components#10739 will implement the storage_access API prompt so we need to also add UI to allow user check the current setting or update it.

┆Issue is synchronized with this Jira Task

[Mugurell]

@ QA: To test this https://senglehardt.com/test/dfpi/storage_access_api.html can be used, specifically the 3rd and 4th iframes after changing in about:config:

• dom.storage_access.auto_grants to false
  (to disable Gecko automatically granting the permission)
• network.cookie.cookieBehavior to 5
• network.cookies.cookieBehavior.pbmode to 5
  (to enable cross origin cookie blocking)

Please note there is an open issue - https://bugzilla.mozilla.org/show_bug.cgi?id=1746031 the permission not being requested again for previously blocked requests and changing the initial allow/block option.

[SoftVision-LorandJanos]

Verified as fixed on the latest Nightly (2021-12-22) with the steps from the above comment.
Device used: Xioami Mi11 Lite (Android 11).
Closing the ticket as fixed.