Added gitpod files

.gitpod.yml

@@ -0,0 +1,12 @@
+image: 
+  file: gitpod.dockerfile
+
+tasks:
+  - init: ./gradlew jar idea
+    command: ./gradlew jar game
+
+ports:
+  - port: 5900
+    onOpen: ignore
+  - port: 6080
+    onOpen: open-preview

gitpod.dockerfile

@@ -0,0 +1,6 @@
+FROM gitpod/workspace-full-vnc
+
+RUN sudo apt-get update && \
+    sudo env "DEBIAN_FRONTEND=noninteractive" apt-get install -y libasound2-plugins libopenal1 zenity libopenal-dev libsndfile1-dev && \
+    sudo rm -rf /var/lib/apt/lists/* && \
+    echo "drivers=pulse" >> /etc/openal/alsoft.conf