feat: add steam_disk_space egg feature to SteamCMD eggs

A new egg feature modal was introduced in Panel v1.7.0 triggering when server has run out of disk space to provide more user-friendly instructions to both admins and normal users. This is unique to SteamCMD specific errors.

game_eggs/steamcmd_servers/mordhau/egg-mordhau-wine.json

@@ -8,7 +8,9 @@
     "name": "Mordhau Wine",
     "author": "parker@parkervcp.com",
     "description": "Mordhau is a multiplayer medieval hack 'n slash video game, developed by Slovenian independent studio Triternion, with a prominent aspect of skill-based competitive play and customization.",
-    "features": null,
+    "features": [
+        "steam_disk_space"
+    ],
     "images": [
         "quay.io\/parkervcp\/pterodactyl-images:debian_wine"
     ],
@@ -128,4 +130,4 @@
             "rules": "nullable|string"
         }
     ]
-}
+}

game_eggs/steamcmd_servers/mordhau/egg-mordhau.json

@@ -8,7 +8,9 @@
     "name": "Mordhau",
     "author": "trey@chazx.cc",
     "description": "Mordhau is a multiplayer medieval hack 'n slash video game, developed by Slovenian independent studio Triternion, with a prominent aspect of skill-based competitive play and customization.",
-    "features": null,
+    "features": [
+        "steam_disk_space"
+    ],
     "images": [
         "quay.io\/parkervcp\/pterodactyl-images:game_mordhau"
     ],