Add support for launching via Heroic

Author: rivques

RLBotCS/ManagerTools/ConfigValidator.cs

@@ -29,11 +29,11 @@ public static bool Validate(MatchConfigurationT config)
             if (config.Launcher == Launcher.Custom)
             {
                 config.LauncherArg = (config.LauncherArg ?? "").ToLower();
-                if (config.LauncherArg != "legendary")
+                if (config.LauncherArg != "legendary" && config.LauncherArg != "heroic")
                 {
                     Logger.LogError(
                         $"Invalid {ctx.ToStringWithEnd(Fields.RlBotLauncherArg)} value \"{config.LauncherArg}\". "
-                            + $"\"legendary\" is the only Custom launcher supported currently."
+                            + $"\"legendary\" and \"heroic\" are the only Custom launchers supported currently."
                     );
                     valid = false;
                 }

RLBotCS/ManagerTools/LaunchManager.cs

@@ -135,6 +135,15 @@ private static void LaunchGameViaLegendary()
         legendary.Start();
     }
 
+    private static void LaunchGameViaHeroic()
+    {
+        Logger.LogWarning("Launching via Heroic...");
+        Process heroic = RunCommandInShell(
+            "xdg-open 'heroic://launch?appName=Sugar&runner=legendary&arg=-rlbot&arg=RLBot_ControllerURL%3D127.0.0.1%3A23233&arg=RLBot_PacketSendRate%3D240&arg=-nomovie'"
+        );
+        heroic.Start();
+    }
+
     public static void LaunchBots(
         List<rlbot.flat.PlayerConfigurationT> bots,
         int rlbotSocketsPort
@@ -324,6 +333,11 @@ int gamePort
                         LaunchGameViaLegendary();
                         return;
                     }
+                    else if (extraArg.ToLower() == "heroic")
+                    {
+                        LaunchGameViaHeroic();
+                        return;
+                    }
 
                     throw new NotSupportedException($"Unexpected launcher, \"{extraArg}\"");
                 case rlbot.flat.Launcher.NoLaunch:
@@ -355,6 +369,11 @@ int gamePort
                         LaunchGameViaLegendary();
                         return;
                     }
+                    else if (extraArg.ToLower() == "heroic")
+                    {
+                        LaunchGameViaHeroic();
+                        return;
+                    }
 
                     throw new NotSupportedException($"Unexpected launcher, \"{extraArg}\"");
                 case rlbot.flat.Launcher.NoLaunch: