Arr-Stack: add sample env config

Docker/Docker-Compose/Arr/env-sample

@@ -0,0 +1,15 @@
+################################################
+# Global
+################################################
+# The timezone you want to use.
+# https://en.wikipedia.org/wiki/List_of_tz_database_time_zones
+TZ=<timezone>
+
+# The UID and GID that the containers will run as.
+# 1000 is your normal user
+PUID=1000 
+PGID=1000
+
+# The directory where data and configuration will be stored.
+ROOT=<path> # The path where your configurations get stored.
+MEDIA=<path> # The path where you want to store your media files.