[iOS] Upgrade banner under course cards on the My Course screen

[moiz994]

An upgrade banner needs to be implemented under the course cards in the Learn tab in order to promote course upgrades.

Acceptance criteria:

• Tapping the banner opens the value prop modal
• UI to be similar to the current implementation
• These banners will only show when the learn/dashboard tab has course list view and not focus card view (focus card view is a part of FC-0047)
• the banner will not show for upgraded courses or other courses the user can not upgrade i.e. expired course

Legacy implementation: