Renamed/rearranged some script files

Data/Scripts/011_Battle/005_AI/004_AI_MegaEvolve.rb

@@ -0,0 +1,12 @@
+class Battle::AI
+  # Decide whether the opponent should Mega Evolve.
+  # TODO: Where relevant, pretend the user is Mega Evolved if it isn't but can
+  #       be.
+  def pbEnemyShouldMegaEvolve?
+    if @battle.pbCanMegaEvolve?(@user.index)   # Simple "always should if possible"
+      PBDebug.log_ai("#{@user.name} will Mega Evolve")
+      return true
+    end
+    return false
+  end
+end