Create a simple terrain

Create a flat terrain for the tank to move on

changed milestone to %Sprint 1: Basic functionality

added 🖥 frontend label

assigned to @janetho

added 🛠 Working on label

created branch 8-create-a-simple-terrain to address this issue

mentioned in commit 776aae3a

mentioned in merge request !17 (closed)

mentioned in commit eaff4981

mentioned in merge request !18 (merged)

mentioned in commit f377ce21

closed with merge request !18 (merged)