Use callback-style events for crosshair and hotbar render events

src/main/java/com/replaymod/replay/events/RenderHotbarCallback.java

@@ -0,0 +1,19 @@
+package com.replaymod.replay.events;
+
+import de.johni0702.minecraft.gui.utils.Event;
+
+public interface RenderHotbarCallback {
+    Event<RenderHotbarCallback> EVENT = Event.create((listeners) ->
+            () -> {
+                for (RenderHotbarCallback listener : listeners) {
+                    Boolean state = listener.shouldRenderHotbar();
+                    if (state != null) {
+                        return state;
+                    }
+                }
+                return null;
+            }
+    );
+
+    Boolean shouldRenderHotbar();
+}

src/main/java/com/replaymod/replay/events/RenderSpectatorCrosshairCallback.java

@@ -1,4 +1,3 @@
-//#if MC>=11400
 package com.replaymod.replay.events;
 
 import de.johni0702.minecraft.gui.utils.Event;
@@ -18,4 +17,3 @@ public interface RenderSpectatorCrosshairCallback {
 
     Boolean shouldRenderSpectatorCrosshair();
 }
-//#endif