Add requirements and aicrowd.json

aicrowd.json

+
+{
+  "challenge_id": "the-neural-mmo-challenge",
+  "authors": [
+    "aicrowd-bot"
+  ],
+  "description": "(optional) description about your awesome agent",
+  "gpu": false
+}
+

requirements.txt

+flexdict
+fire==0.4.0
+ray==1.2.0
+cloudpickle==1.2.2
+setproctitle==1.1.10
+redis==3.5.3
+autobahn==19.3.3
+Twisted==19.2.0
+gym==0.17.2
+dm-tree==0.1.5
+vec-noise==1.1.4
+bokeh==2.2.3
+imageio==2.8.0
+sphinx-rtd-theme==0.5.1
+matplotlib
+