Isometric 2D UI implementation

[F1uctus]

Currently our gamebot is implemented with monospaced ASCII-graphics.
Our plans are to expose the graphics system to some simple 2D
(Isometric view is not a requirement, but it looks much more fancy)

Places to look into:

• https://github.com/Zemllia/RPGram/tree/master/src/main/java/rpgram/ui

More specifically, the map rendering logic is implemented here

• RPGram/src/main/java/rpgram/ui/views/MapView.java

  Line 67 in e6857de

  private static char[][] mapToCharMatrix(Human player) {

Any attempts to add an UI are highly appreciated.