[WIP] Poster Buttons Context Menus

[JPKribs]

Issue

Resolves: #1157

Summary

WIP
The goal of this PR are to allow functions to be performed for an item from the PosterButton. This would allow making changes or playing menu from the library instead of needing to enter the itemView. So far, my list would be:

• Play / Resume / Start From Beginning
• Mark as Played / Unplayed
• Favorite / Unfavorite
• Shuffle [Needs to be Implemented First]
• Add to Playlist [Needs to be Implemented First]
• Download [Needs to be Implemented First]

In-Progress

• Make sure my new PosterButton Struct is the right way to do this
• Implement Play/Resume logic for Movies
• Implement Play/Resume logic for Shows
• Use this new PosterButton Struct for HomeView ContextMenus

Screenshots