Design player health UI

[wjt]

When the player-character has health, we will need to display this on the screen somehow. Some open questions:

0. How should health be displayed?
1. Should this be part of the HUD; should it be visible above the player-character's head; or somewhere else?
   a. If it's part of the HUD, how does it interact with the lives indicator? (Design HUD for lives #1387)
2. Is it always visible, or only once the player takes damage?
3. Is it visible in levels/area where you cannot take damage (e.g. Fray's End, sequence puzzle) or is it always visible?

XP Summary (total 375)

Subdomain	Skill	XP
Game Design: Game Feel & UX	Problem Solving	150
Game Design: Game Feel & UX	Creativity & Design Thinking	150
Game Design: Game Feel & UX	Technical Literacy	75