add "tracks" ecosystem test

data/blueprints/library/test/ecosystem/in/tracks-build.csv

@@ -0,0 +1,4 @@
+#build label(build)
+#>
+
+,,CS

data/blueprints/library/test/ecosystem/in/tracks-dig.csv

@@ -0,0 +1,6 @@
+#dig label(dig)
+d,d,d,d,d
+d,h,d,h,d
+#>
+
+,r,d,r

data/blueprints/library/test/ecosystem/in/tracks-spec.csv

@@ -0,0 +1,5 @@
+#notes
+description=track system
+width=5
+height=2
+depth=2

data/blueprints/library/test/ecosystem/in/tracks-track.csv

@@ -0,0 +1,6 @@
+#dig label(track)
+trackSE,trackEW,trackEW,trackEW,trackSW
+trackNE,,,,trackNW
+#>
+
+,trackrampEW,trackEW,trackrampEW