New crucible shop upgrades

A few ideas for new things purchasable in the crucible shop.

  1. Reroll. Allows you to reroll all your echoes x times for free each crucible run. Where x is the level of the upgrade. Most likely should only be level 2 or 3 for max.

  2. Increase echo effectiveness. Increases the effectiveness of echoes. For example instead of damage increased by 5% it would be increased by 2% for every level.

  3. Increase certain stat while in crucible. Increases a stat while in crucible. For example strength increased by x levels while in the crucible. Where x is the level up the upgrade.

  4. Food finder. Adds food to the chests at the end of the run. Amount of food dependent on level of upgrade.