Block percentage cap for emissive armor

**What do you want to see?**
The Value 2 of the emissive armor ability should be a percentage which is the maximum percentage of any incoming attack to block. So if you have 20 emissive ability and 50% max block, then if you get hit by 30 damage, the armor will block only 15 (50% of it) rather than 20. If the field is left blank, the armor will behave as it does now, with no percentage cap.

This idea comes from the armor stat from Rogue Legacy 2.

**How would it help players?**
Balance emissive armor so it's not insanely OP.

**Alternatives**
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**Screenshots and mockups**
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**Things to consider**
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