RFE: Classify equipment by type (infantry, mech, vehicle, etc)

[JWest82]

As the tables of equipment get longer it is harder to filter out what you are looking for in the purchase parts dialogs. It would be nice if there was a heading in the table to select only infantry or mech equipment to remove everything that is not applicable.

[Felderburg]

It's worth noting that the "advanced search" filter when adding a unit in the megamek lobby does have this functionality. Which is of course not mekHQ, but hopefully means it'll be less work than doing it from scratch.