added some useful flight stats

Many of the stats we already have access to (ie Ap, Pe) are calculated from others we didn't have (ie SMA and ECC). I added them.

Transition is interesting because it pulls the end state of the current orbit out of the simulation and as such is pretty accurate. some of the possible states are:
* FINAL //your orbit continues till the end of the simulation 
* ENCOUNTER //your orbit encounters a body orbiting your current reference body
* ESCAPE //your orbit will escape the current reference body
* MANEUVER // your orbit encounters a maneuver node

Because the simulation continues for more than one orbit, I added the time to the transition in UT, this along with OBT:PEROID and our existing time tools should let you figure out how many orbits in the future the transition will take place in.