Score HUD Element Overhaul

[jdrueckert]

Desired result

Tasks

• [x] Move skin file from LaS repo to LaSR repo - done in #129
• [X] Update reference to skin file - done in #129
• [x] Create a new design
• [x] Place UIImage at the middle - WIP #138
• [x] Place UILabels next to the current team scores, and connect it with GOAL_SCORE at LASUtils.java - WIP #138
• [x] Place UI images next to the scores, indicating which score is which team's - WIP #138
• [X] Create a PR for LASR, with the task to create and insert the Flag image in the middle of the UI - done https://github.com/Terasology/LightAndShadowResources/pull/47

How to test

1. Start a LaS game
2. Notice the points at the top middle of the screen

[skaldarnar]

I think this one can be closed as completed!