Add player limit feature for private lobbies

resources/lang/debug.json

@@ -127,7 +127,8 @@
     "checking": "private_lobby.checking",
     "not_found": "private_lobby.not_found",
     "error": "private_lobby.error",
-    "joined_waiting": "private_lobby.joined_waiting"
+    "joined_waiting": "private_lobby.joined_waiting",
+    "lobby_full": "private_lobby.lobby_full"
   },
   "public_lobby": {
     "join": "public_lobby.join",
@@ -154,7 +155,9 @@
     "player": "host_modal.player",
     "players": "host_modal.players",
     "waiting": "host_modal.waiting",
-    "start": "host_modal.start"
+    "start": "host_modal.start",
+    "player_limit": "host_modal.player_limit",
+    "player_limit_warning": "host_modal.player_limit_warning"
   },
   "game_starting_modal": {
     "title": "game_starting_modal.title",

resources/lang/en.json

@@ -239,7 +239,8 @@
     "not_found": "Lobby not found. Please check the ID and try again.",
     "error": "An error occurred. Please try again or contact support.",
     "joined_waiting": "Joined successfully! Waiting for game to start...",
-    "version_mismatch": "This game was created with a different version. Cannot join."
+    "version_mismatch": "This game was created with a different version. Cannot join.",
+    "lobby_full": "Lobby is full (limit: {limit})."
   },
   "public_lobby": {
     "join": "Join next Game",
@@ -292,7 +293,9 @@
     "assigned_teams": "Assigned Teams",
     "empty_teams": "Empty Teams",
     "empty_team": "Empty",
-    "remove_player": "Remove {username}"
+    "remove_player": "Remove {username}",
+    "player_limit": "Player limit",
+    "player_limit_warning": "Limit is below current player count; new players can't join."
   },
   "team_colors": {
     "red": "Red",