Add FXIOS-8703 Share action to library items context menu (backport #19333)

[mergify]

📜 Tickets

Jira ticket
Github issue

💡 Description

Add Share Option to Library Menus (Bookmark, History, Reading List).

• Created a shared protocol LibraryPanelCoordinatorDelegate so that Bookmark, Reading List, History delegates can conform to it + reduce code.
• Passed in LibraryNavigationHandler so that all the panels can create the share extension via the LibraryCoordinator.
• Moved HistoryPanel+ContextMenuExtensions to HistoryPanel and use MARK instead of extension as per wiki: https://github.com/mozilla-mobile/firefox-ios/wiki/When-To-Use-Extensions. This also allows us to access the private tableView property.

📝 Checklist

You have to check all boxes before merging

• Filled in the above information (tickets numbers and description of your work)
• Updated the PR name to follow our PR naming guidelines
• Wrote unit tests and/or ensured the tests suite is passing
• When working on UI, I checked and implemented accessibility (minimum Dynamic Text and VoiceOver)
• If needed, I updated documentation / comments for complex code and public methods
• If needed, added a backport comment (example @Mergifyio backport release/v120)

Screenshots

Bookmarks	History	Reading List

[mobiletest-ci-bot]

	Messages
📖	Project coverage: 33.78%
📖	Edited 13 files
📖	Created 2 files

Client.app: Coverage: 32.5

File	Coverage
HistoryCoordinator.swift	89.47%	✅
BookmarksCoordinator.swift	78.26%	✅
ReaderPanel.swift	44.93%	⚠️
HistoryPanel.swift	37.69%	⚠️
ReadingListCoordinator.swift	100.0%	✅
LibraryCoordinator.swift	91.41%	✅
BookmarksPanel.swift	39.64%	⚠️
LibraryPanelContextMenu.swift	0.0%	⚠️

Generated by 🚫 Danger Swift against d20c439