Track entry hazards

[taylorhansen]

Sample:

|move|p2a: Forretress|Spikes|p1a: Nidoking
|-sidestart|p1: taylor108|Spikes

A different format for referencing a player's team is being used here, which will probably be used to handle other team statuses.

Each entry hazard type should have a counter to indicate how many layers of that hazard are stacked.
The move will |-fail| if no |-sidestart| message is parsed.

Not sure how hazard removal would work.
Likely it would be using a similar |-sideend| message, but experimental logs should be gathered first.