[Surgebinding] Radiant Spren Affinity System

[leafreynolds]

We want bonding a radiant spren to be interesting and rewarding. Ideally this should be more than just a basic 'number go up or down' when doing something a spren loves or hates. The first pass may still be this implementation however.

An example of more interesting affinity systems can be like The Machine And Her, a fallout 4 companion mod. It is not completely copy-able, since it's a trust value and a cynicism value.

Additionally, each spren from each order will have their general list of things that would attract their attention. In example,

• Honorspren would be attracted from trying to defend a village from a raid. Failing is okay.

This is a post-requisite to #112