This introduces basic Path Tiler map editor tool functionality to TS
with some segmented MultiBrush definitions. The included MultiBrush
definitions cover both the Temperate and Snow tilesets's Beach, Cliff,
and WaterCliff tiles.
MultiBrush now incorporates Height and Ramp information. Some
associated Terraformer utilities are updated with the API surface
change.
There are some known limitations that are not addressed in this PR:
- The path laying UI doesn't account for the map's current heights.
- The preview does not use a correct height or Z-ordering.
* Rename LeftColor and RightColor to MinColor and MaxColor
These are mapped from LowRadarColor and HighRadarColor in
the original inis, and appear to be used to set the bounding
values for selecting a random colour, NOT for left/right
pixels (which caused noticeably wrong banding).
* Adjust brightness based on terrain height.
MinHeightColorBrightness and MaxHeightColorBrightness
were chosen by trial/error to match the original
map preview rendering.
