Ability to Create Trip Options/Categories

@Aditya_Singh I had requested to allow to use the custom Accounting Code fields on a trips and then default these accounting codes to new transactions that are added to the trips.

I think both my wish and @Alvin_James wish can be solved with the same option.

We would also like to be able to export the Trip info as columns in the UCSV exports, but right now it is not possible to even export any trip information which is a big downside to using the trip feature in the first place .