Added .gitignore and a .env example

.env.example

@@ -0,0 +1,3 @@
+# VPN Secrets
+VPN_PRIVATE_KEY=change_me
+VPN_ADDRESS=xx.xx.xx.xx/yy

.gitignore

@@ -0,0 +1,16 @@
+# Ignore Environment Variables
+.env
+
+# Ignore Docker Config/State Directories
+gluetun/
+lidarr_config/
+prowlarr_config/
+qbit_config/
+radarr_config/
+sonarr_config/
+mediamanager_config/
+postgres_data/
+
+# Ignore System Files
+.DS_Store
+Thumbs.db