Core/Conditions: Added CONDITION_SCENE_IN_PROGRESS, useful for cases where you need phase things when a scene is in progress.

Port From (https://github.com/TrinityCore/TrinityCore/commit/bd401af0912eca2c938b6dd93fdb7689b9146c89)

Source/Framework/Constants/ConditionConst.cs

@@ -74,6 +74,7 @@ namespace Framework.Constants
         TypeMask = 52,               // TypeMask         0              0                  true if object is type object's TypeMask matches provided TypeMask
         BattlePetCount = 53,         // SpecieId         count          ComparisonType     true if player has `count` of battle pet species
         ScenarioStep = 54,           // ScenarioStepId   0              0                  true if player is at scenario with current step equal to ScenarioStepID
+        SceneInProgress = 55,        // SceneScriptPackageId   0        0                  true if player is playing a scene with ScriptPackageId equal to given value
         Max
     }
 

Source/Game/Conditions/Condition.cs

@@ -411,6 +411,12 @@ namespace Game.Conditions
                     }
                     break;
                 }
+                case ConditionTypes.SceneInProgress:
+                {
+                    if (player != null)
+                        condMeets = player.GetSceneMgr().GetActiveSceneCount(ConditionValue1) > 0;
+                    break;
+                }
                 default:
                     condMeets = false;
                     break;
@@ -527,6 +533,9 @@ namespace Game.Conditions
                 case ConditionTypes.ScenarioStep:
                     mask |= GridMapTypeMask.All;
                     break;
+                case ConditionTypes.SceneInProgress:
+                    mask |= GridMapTypeMask.Player;
+                    break;
                 default:
                     Cypher.Assert(false, "Condition.GetSearcherTypeMaskForCondition - missing condition handling!");
                     break;

Source/Game/Conditions/ConditionManager.cs

@@ -1767,6 +1767,15 @@ namespace Game
                     }
                     break;
                 }
+                case ConditionTypes.SceneInProgress:
+                {
+                    if (!CliDB.SceneScriptPackageStorage.ContainsKey(cond.ConditionValue1))
+                    {
+                        Log.outError(LogFilter.Sql, $"{cond.ToString(true)} has non existing SceneScriptPackageId in value1 ({cond.ConditionValue1}), skipped.");
+                        return false;
+                    }
+                    break;
+                }
                 default:
                     Log.outError(LogFilter.Sql, $"{cond.ToString()} Invalid ConditionType in `condition` table, ignoring.");
                     return false;
@@ -2986,7 +2995,8 @@ namespace Game
             new ConditionTypeInfo("Object Entry or Guid", true, true,  true),
             new ConditionTypeInfo("Object TypeMask",      true, false, false),
             new ConditionTypeInfo("BattlePet Species Learned", true, true,  true),
-            new ConditionTypeInfo("On Scenario Step",          true, false, false)
+            new ConditionTypeInfo("On Scenario Step",          true, false, false),
+            new ConditionTypeInfo("Scene In Progress",         true, false, false)
         };
 
         public struct ConditionTypeInfo