add a Resolve plugin

Now that I've got to run through Highmaul with this I feel like it's ready for a pull request.  The localization are only partially translated and what was translated was done with Google Translate.  This was adapted from the TankShield plugin.  I have been happy with my color choices but I'm not sure they make sense as defaults.  Right now they are:

- < 50% grey, meant to appear almost like it's empty
- 50-100% yellow, use shield but try to hold off
- 100-150% green, using shield now is good
- >150% red, use shield now!

It might be nice if the thresholds were customizable but I didn't do it because at this point the ranges experienced vary based on content.  For example, in CMs I almost never see red and rarely see green but in Highmaul I will sit in red for quite awhile.