Firebase - Game

[jontslater]

• [x] firebaseKey
• [x] gameTitle
• [x] gameRating
• [x] Favorite?
• [x] gamePlatform
• [x] youtubeVideo
• [x] genred_id
• [x] user_id

[jontslater]

Moved genre to a stretch goal, game rating moved to stretch goal, and favorite as stretch goal.