[Up Next Shuffle] Add Tracks event

[danielebogo]

📘 Part of: Up Next Shuffle

Fixes #2328

Add up_next_shuffle_enabled tracks event

To test

• CI must be 🟢
• Make sure you have the FF on and tracks logger on
• Navigate to Up next in tab
• Tap the shuffle button to enable/disable it
• Check 🔵 Tracked: up_next_shuffle_enabled ["source": "tab_bar", "value": VALUE] is logged
• Navigate to Up next in modal (from the mini player)
• Tap the shuffle button to enable/disable it
• Check 🔵 Tracked: up_next_shuffle_enabled ["source": "mini_player", "value": VALUE] is logged
• Navigate to Up next in modal (from the player fullscreen)
• Tap the shuffle button to enable/disable it
• Check 🔵 Tracked: up_next_shuffle_enabled ["source": "now_playing", "value": VALUE] is logged

Checklist

• I have considered if this change warrants user-facing release notes and have added them to CHANGELOG.md if necessary.
• I have considered adding unit tests for my changes.
• I have updated (or requested that someone edit) the spreadsheet to reflect any new or changed analytics.

[dangermattic]

	1 Warning
⚠️	This PR is assigned to the milestone 7.76. This milestone is due in less than 2 days. Please make sure to get it merged by then or assign it to a milestone with a later deadline.

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[SergioEstevao]