The status of every Guardian should be shown in the UI
This task ties in with #17 and #18. Every Guardian's state should be shown in the UI to give the player a better overview over what's happening. This status includes:
- the type of Guardian.
- remaining ammo. Doesn't have to be exact, 3/5 packs works too.
- its position. A small arrow should point in the Guardians direction, measured in relation to where the player is looking.