Move Ice Cube mashing code to bot AI

- It was hacked in outside of it before, so the normal
  item button AI was running simultaneously

src/k_botitem.cpp

@@ -1560,6 +1560,40 @@ static void K_BotItemInstashield(const player_t *player, ticcmd_t *cmd)
 
 }
 
+/*--------------------------------------------------
+	static void K_BotItemIceCube(player_t *player, ticcmd_t *cmd)
+
+		Item usage for ice cubes.
+
+	Input Arguments:-
+		player - Bot to do this for.
+		cmd - Bot's ticcmd to edit.
+
+	Return:-
+		None
+--------------------------------------------------*/
+static void K_BotItemIceCube(const player_t *player, ticcmd_t *cmd)
+{
+	ZoneScoped;
+
+	if (leveltime % 7)
+	{
+		return;
+	}
+
+	if (player->sneakertimer)
+	{
+		return;
+	}
+
+	if (!P_IsObjectOnGround(player->mo))
+	{
+		return;
+	}
+
+	cmd->buttons |= BT_DRIFT;
+}
+
 /*--------------------------------------------------
 	static tic_t K_BotItemRouletteMashConfirm(const player_t *player)
 
@@ -1617,6 +1651,12 @@ void K_BotItemUsage(const player_t *player, ticcmd_t *cmd, INT16 turnamt)
 {
 	ZoneScoped;
 
+	if (player->icecube.frozen)
+	{
+		K_BotItemIceCube(player, cmd);
+		return;
+	}
+
 	if (player->itemflags & IF_USERINGS)
 	{
 		if (player->rings > 0)

src/objects/frost-thrower.cpp

@@ -357,35 +357,9 @@ boolean Obj_IceCubeThink(mobj_t* mo)
 
 void Obj_IceCubeInput(player_t* player)
 {
-	// FIXME: this should be in the bot ticcmd code
-	auto bot_hack = [player]
-	{
-		if (!K_PlayerUsesBotMovement(player))
-		{
-			return false;
-		}
-
-		if (leveltime % 7)
-		{
-			return false;
-		}
-
-		if (player->sneakertimer)
-		{
-			return false;
-		}
-
-		if (!P_IsObjectOnGround(player->mo))
-		{
-			return false;
-		}
-
-		return true;
-	};
-
 	// Must be mashing some buttons
 	auto press = [player](buttoncode_t bt) { return (player->cmd.buttons & ~player->oldcmd.buttons) & bt; };
-	if (!(press(BT_ACCELERATE) || press(BT_ATTACK) || press(BT_DRIFT) || bot_hack()))
+	if (!(press(BT_ACCELERATE) || press(BT_ATTACK) || press(BT_DRIFT)))
 	{
 		return;
 	}