all: remove koka code, move go to repo root

sparktype_string.go

@@ -0,0 +1,34 @@
+// Code generated by "stringer -type SparkType -trimprefix Spark"; DO NOT EDIT.
+
+package horse
+
+import "strconv"
+
+func _() {
+	// An "invalid array index" compiler error signifies that the constant values have changed.
+	// Re-run the stringer command to generate them again.
+	var x [1]struct{}
+	_ = x[SparkStat-1]
+	_ = x[SparkAptitude-2]
+	_ = x[SparkUnique-3]
+	_ = x[SparkSkill-4]
+	_ = x[SparkRace-5]
+	_ = x[SparkScenario-6]
+	_ = x[SparkCarnival-7]
+	_ = x[SparkDistance-8]
+	_ = x[SparkHidden-9]
+	_ = x[SparkSurface-10]
+	_ = x[SparkStyle-11]
+}
+
+const _SparkType_name = "StatAptitudeUniqueSkillRaceScenarioCarnivalDistanceHiddenSurfaceStyle"
+
+var _SparkType_index = [...]uint8{0, 4, 12, 18, 23, 27, 35, 43, 51, 57, 64, 69}
+
+func (i SparkType) String() string {
+	idx := int(i) - 1
+	if i < 1 || idx >= len(_SparkType_index)-1 {
+		return "SparkType(" + strconv.FormatInt(int64(i), 10) + ")"
+	}
+	return _SparkType_name[_SparkType_index[idx]:_SparkType_index[idx+1]]
+}