Implement spice of life upgrade

[ambrosia13]

• adds field "uniquePatterns" in Level_manager to track the total unique number of patterns found so far (hash set)
• adds field "isDealtByPlayer" in Deal_damage component, and if this is true, and the spice of life modifier value is greater than zero, will multiply the damage dealt by the number of unique patterns and the modifier value

[Rockyd3]

2 things:

1. When the upgrade isn't purchased and no patterns have been used yet, I believe the sword no longer does any damage. I assume it's getting multiplied by zero somewhere?
2. This increments damage by 100% for each new pattern, not by 1%

If you could fix those that'd be much appreciated!