修改本体，添加CrossTrackPoint兼容层，兼容StaticTrack Hold，为难度选项扩增全屏可选，添加和调整某些谱面

Signed-off-by: TRADER_FOER <lhf190@outlook.com>

Assets/Scripts/Game/Base/FlexibleTypes/FlexibleFloat.cs

@@ -60,6 +60,16 @@ namespace Ichni.RhythmGame
             animations = anim;
         }
 
+        public FlexibleFloat_BM ConvertToBM()
+        {
+            if (animations == null || animations.Count == 0)
+            {
+                return new FlexibleFloat_BM();
+            }
+
+            return new FlexibleFloat_BM(new List<AnimatedFloat>(animations));
+        }
+
         public void Add(AnimatedFloat animatedFloat)
         {
             animations.Add(animatedFloat);

Assets/Scripts/Game/Base/FlexibleTypes/FlexibleInt.cs

@@ -44,6 +44,16 @@ namespace Ichni.RhythmGame
             this.animations = anim;
         }
 
+        public FlexibleInt_BM ConvertToBM()
+        {
+            if (animations == null || animations.Count == 0)
+            {
+                return new FlexibleInt_BM();
+            }
+
+            return new FlexibleInt_BM(new List<AnimatedInt>(animations));
+        }
+
         public void Add(AnimatedInt animatedInt)
         {
             animations.Add(animatedInt);