Create a list of map keys and map names

We need to create a mapping between map server name and map display name:

It should look like this:

{
  "8p_whiteball_express":  "Whiteball Express" ,
  "roadtoarnhem":  "Road To Arnhem" 
   ...
}

This list of maps is as follows: 4v4:

8p_whiteball_express
8p_redball_express
roadtoarnhem
8p_port_of_hamburg
8p_lienne_forest
8p_essen_steelworks
8p_nordwind
8p_hill_400
8p_lazenrath_ambush
8p_coh2_thesteppes_frontline
8p_coh2_city_17_spring_frontline
8p_lorch_assault
8p_la_gleize
8p_general_mud
8p_west_wall

3v3:

6p_across_the_rhine
8p_whiteball_express
6p_fields_of_winnekendonk
6p_port_of_hamburg
8p_redball_express
6p_ettelbruck_station
6p_rzhev_frontline
6p_angermuende
4p_coh2_okariver_frontline
8p_lienne_forest
8p_essen_steelworks
6p_hill_400
8p_coh2_thesteppes_frontline
8p_la_gleize
8p_general_mud

2v2:

4p_einhoven_country
4p_crossing_in_the_woods
aod
4p_belgorod
4p_road_to_kharkov
highwaybaku
wolfheze
4p_rails_and_metal
4p_elst_outskirts
4p_minsk_pocket_frontline
4p_dreux_scout
4p_fields_of_winnekendonk
4p_moscow_outskirts_fall_frontline
4p_vaux_farmlands

1v1:

crossroads
mill_road
langres
amilly_fields
2p_faymonville_approach
2p_bayeux
nexus
bocage
vilshanka
crossroadswx
2p_kholodnaya_ferma_spring_frontline
2p_crossing_in_the_woods
ploiesti

cohstats / coh2stats

Create a list of map keys and map names #246