SSBU DRPC - Stage Editing (#707)

Adds it so the Rich Presence now notices when the player edits a custom
stage!

src/Ryujinx/Utilities/PlayReport/PlayReports.Formatters.cs

@@ -115,6 +115,11 @@ namespace Ryujinx.Ava.Utilities.PlayReport
                 return $"Achievement Unlocked - ID: {anniversary}";
             }
 
+            if (values.Matched.ContainsKey("is_created"))
+            {
+                return "Edited a Custom Stage!"; 
+            }
+
             if (values.Matched.ContainsKey("adv_slot"))
             {
                 return

src/Ryujinx/Utilities/PlayReport/PlayReports.cs

@@ -71,7 +71,7 @@ namespace Ryujinx.Ava.Utilities.PlayReport
                         [
                             // Metadata to figure out what PlayReport we have.
                             "match_mode", "match_submode", "anniversary", "fighter", "reason", "challenge_count",
-                            "adv_slot",
+                            "adv_slot", "is_created",
                             // List of Fighters
                             "player_1_fighter", "player_2_fighter", "player_3_fighter", "player_4_fighter",
                             "player_5_fighter", "player_6_fighter", "player_7_fighter", "player_8_fighter",