Tomatoes, match tabs, shared pings, and a round of fixes

- On the results, everyone but the winner splats tomatoes where they
  click (bots aim at the winner), with a new splat sound.
- During a match the menu has the item tabs (choosing when the
  countdown allows, and otherwise levelling the sandbox's levels for
  when you're back), Play (the game's rules) and Settings.
- Pings are shared through the server (protocol 4), so other players'
  connection bars show over their heads and on their windows.
- PvP comes into lobbies with your profile and is saved.
- The choice menu opens by itself however the countdown began.
- Knocked-out fighters keep their buttons current, so Ready on the
  results toggles once per press.
- The weapon wheel wraps both ways. Readying with empty slots plays
  the equip sound for your own fighter.
- Shock Absorber: up to 50% less weapon movement and 33% less
  knockback. Only the catalog previews the next level.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/input.h

@@ -3,6 +3,7 @@
 #include "common.h"
 #include <vector>
 
+class Fighter;
 struct Game;
 struct SDL_Gamepad;
 struct SDL_Joystick;
@@ -159,7 +160,7 @@ public:
     void poll(Game& game);
     void tick_end();
     void bindings_reset();
-    Controls controls_get(int device, Vec2 camera, Vec2 origin, int slot, bool isMenuOpen);
+    Controls controls_get(int device, Vec2 camera, Fighter& fighter, bool isMenuOpen);
     void edit_send(int device, int edit);
     Vec2 aim_get(int device, Vec2 camera, Vec2 origin);
     bool is_down(int scancode);