Track retreats in combat stats

[perryhuynh]

If possible, track the number of retreats (and per hour) with the existing combat stats

[stackhanovets]

FYI, KC3Kai provides annotation for moderate / heavy damage impacts.

[mrmin123]

@perryhuynh when tracking retreats, which retreat types do you have in mind? There are a couple:

• Retreats do to damage threshold
• Retreats do to reaching retreat node or combat count
• Forced retreats do to flagship damage
• FCF accompanied retreat