New unit: Drake Hatchling

Purposedly not enabled on MP. Lesser units don't fit this strong race IMHO.
But scenario designers could find it useful, so it's in.

data/units/Drake_Hatchling.cfg

@@ -0,0 +1,33 @@
+[unit]
+name=Drake Hatchling
+race=drake
+image=drake-hatchling.png
+image_defensive=drake-hatchling-defend.png
+hitpoints=20
+movement_type=drakefoot
+movement=4
+experience=19
+level=0
+alignment=neutral
+advanceto=Drake Slave
+cost=7
+usage=fighter
+unit_description=""
+get_hit_sound=female-cry.wav
+	[attack]
+	name=claws
+	type=blade
+	range=short
+	damage=5
+	number=2
+		[frame]
+		begin=-150
+		end=0
+		image=drake-hatchling-attack.png
+		[/frame]
+		[sound]
+		time=-100
+		sound=sword-swish.wav
+		[/sound]
+	[/attack]
+[/unit]