Add dropdown with predefined values for Weather Definition

[ozonexo3]

Map Style Types (defined in Weatehr Definition):
Desert
Evergreen
Geothermal
Lava
RedRock
Tropical
Tundra

Force Types:
Desert
LightStratus

Evergreen
CumulusClouds
StormClouds
RainClouds

Geothermal

Lava

RedRock
LightStratus

Tropical
LightStratus

Tundra
WhitePatchyClouds
SnowClouds

All Styles:
CirrusSparse256
CirrusMedium256
CirrusHeavy256
CirrusSparse512
CirrusMedium512
CirrusHeavy512
CirrusSparse1024
CirrusMedium1024
CirrusHeavy1024
CirrusSparse4096
CirrusMedium4096
CirrusHeavy4096