Added a lvl0 Giant Scorpling unit, leveling into the Giant Scorpion

Sprites and animations by doofus-01. Also fixed the offset of Giant Scorpion.

data/core/units/monsters/Giant_Scorpling.cfg

@@ -0,0 +1,69 @@
+#textdomain wesnoth-units
+[unit_type]
+    id=Young Scorpion
+    name= _ "Young Scorpion"
+    race=monster
+    image="units/monsters/scorpion/scorpling.png"
+    small_profile="portraits/monsters/scorpion.png~FL()"
+    profile="portraits/monsters/scorpion.png~RIGHT()"
+    hitpoints=24
+    movement_type=scuttlefoot
+    movement=6
+    experience=20
+    level=0
+    alignment=neutral
+    advances_to=Giant Scorpion
+    cost=10
+    usage=fighter
+    description= _ "One of the most potent known venoms is that of the monstrous scorpions of the frontier. Fetching a high price by assassins and apothecaries alike, this venom is often seen as a quick way to make coin, alluring bold hunters to venture into the wilderness to harvest it. However, even in a juvenile state, these scorpions can deliver deadly stings and are faster than most men. What's worse is that they can live in rather large nests, and angering a seemingly lone scorpion can lead to swarms of them crawling up from the ground — quickly turning the hunter into the hunted."+{SPECIAL_NOTES}+{SPECIAL_NOTES_POISON}
+    die_sound=hiss-big.wav
+    {DEFENSE_ANIM "units/monsters/scorpion/scorpling-defend2.png" "units/monsters/scorpion/scorpling-defend1.png" hiss.wav }
+    [attack]
+        name=sting
+        description=_"sting"
+        type=pierce
+        range=melee
+        [specials]
+            {WEAPON_SPECIAL_POISON}
+        [/specials]
+        damage=5
+        defense_weight=4.0
+        number=1
+    [/attack]
+    [attack]
+        name=pincers
+        description=_"pincers"
+        type=impact
+        range=melee
+        damage=2
+        number=4
+    [/attack]
+    [attack_anim] 
+        [filter_attack]
+            name=pincers
+        [/filter_attack]
+        start_time=-300
+        offset=0:200,0~0.6:150,0.6~0:150
+        [frame]
+            image="units/monsters/scorpion/scorpling-pincer[1~7].png:[50,75,75,50,50,75,100]"
+        [/frame]
+        {SOUND:HIT_AND_MISS pincers.ogg {SOUND_LIST:MISS} -50}
+        [frame]
+            image="units/monsters/scorpion/scorpling.png:25"
+        [/frame]
+    [/attack_anim]
+    [attack_anim]
+        [filter_attack]
+            name=sting
+        [/filter_attack]
+        start_time=-250
+        offset=0:150,0~0.6:150,0.6:100,0.6~0:150
+        [frame]
+            image="units/monsters/scorpion/scorpling-sting[1~5].png:[75,75,150,100,150]"
+        [/frame]
+        {SOUND:HIT_AND_MISS spear.ogg {SOUND_LIST:MISS} -100}
+        [frame]
+            image="units/monsters/scorpion/scorpling.png:1"
+        [/frame]
+    [/attack_anim]
+[/unit_type]