MSCO 2.10.0: mod support, ESC no longer quits from the main menu

- MscoMod API (ModApi.cs) and ModLoader: own mods from MSCO\Mods, hooks for menu/game/update/GUI,
  session and player events, Send/OnMessage between players (MsgType.ModMessage)
- Server mods: ModList before Welcome, consent prompt (INSTALL & JOIN), download with SHA-256 check
  into MSCO\Mods\Servers, active only on that server; game start waits for the download
- Mods page in the MSCO menu, console command "mods"
- Server browser: MODS pill, VANILLA/MODDED filters, mod list in the server profile
- PlayMaker ApplicationQuit is ignored in the main menu (ESC used to close the game)
- MODDING.md and examples/HelloMod

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

Commands.cs

@@ -19,6 +19,7 @@ namespace MSCO
             "host [port] / join <ip> [port] - direct LAN game (no Steam)\n" +
             "save                   - save the game (host / singleplayer)\n" +
             "bind [action key]      - show / change keys (passenger, console, chat)\n" +
+            "mods                   - loaded MSCO mods (folder MSCO\\Mods)\n" +
             "ping [on|off]          - show your ping to the server (toggle)\n" +
             "fps [on|off]           - show the frames per second (toggle)\n" +
             "/admin                 - admin menu (kick / ban / teleport / cheats)\n" +
@@ -117,6 +118,16 @@ namespace MSCO
                     else mp.ShowPing = !mp.ShowPing;
                     print("Ping: " + mp.PingText + " (display " + (mp.ShowPing ? "on" : "off") + ")");
                     break;
+                case "mods":
+                    if (ModLoader.All.Count == 0) { print("No mods. Put MSCO mods (.dll) into " + ModLoader.Folder + " and restart the game."); break; }
+                    foreach (ModLoader.LoadedMod m in ModLoader.All)
+                    {
+                        string name = "?", version = "";
+                        try { name = m.Mod.Name; version = m.Mod.Version; } catch { }
+                        print("  " + name + " " + version + (m.FromServer ? "  [server]" : "") +
+                              (m.Error != null ? "  turned off: " + m.Error : m.Active ? "  active" : "  inactive"));
+                    }
+                    break;
                 case "bind":
                 {
                     // Tasten ändern: "bind" zeigt alle, "bind passenger O" setzt eine (früher MSCLoader-Einstellungen)