[New Feature] Add Custom SpeedType

[Thrifinesma]

Description:

Literal meaning, allow modder to add new SpeedType for TechnoTypes. That would allow more detailed move settings.

Possible Implementation:

[SpeedTypes]
1=NewSpeedType

[SOMETECHNO]
SpeedType=NewSpeedType

[Clean] ; Speed Modifier on tiles
NewSpeedType=200%