Make Super Missiles strictly an upgrade to the regular Missile Launcher

Turns out that having only 5 Super Missiles as your only weapon is a pain.
Also, it causes problems in cases when there's a required progression item in
the upper Sand Zone Polish spot and no other accessible block-breaker weapon
that you can use to get to it.
(It's still technically possible to reach that item location in such a
scenario, but it requires grinding the missiles up to Level 3, as well as
some luck and a couple of precise jumps. In other words, it sucks.)

The alternative is starting with 10 Super Missiles instead of 5 if you get
the Super Missile chest first, but that would give you an extra 5 missiles,
letting you have 59 at the end instead of 54, which feels wrong.

pre-edited-cs/data/ScriptSource/Head.txt

@@ -95,11 +95,9 @@ Got the last =Puppy=!<WAI0025<NOD<END
 <PRI<AM+0010:0005<MSG<TUR
 <GIT0011Max missiles increased by 5!<NOD<END
 #0033
-<FL+2420<FL+0201<AMJ0005:0034
-<PRI<MSG<TUR<GIT0010<AM+0010:0005
-Got the =Super Missile Launcher=!<WAI0025<NOD<END
+<AMJ0005:0034<EVE0030
 #0034
-<PRI<MSG<TUR<GIT0010<TAM0005:0010:0000
+<PRI<FL+2420<MSG<TUR<GIT0010<TAM0005:0010:0000
 Your Missiles have been powered up!<WAI0025<NOD<END
 #0035
 <PRI<FLJ2420:0037<FLJ0201:0036<FL+0201<MSG<TUR<GIT0005<AM+0005:0029

src/database/items.lua

@@ -324,7 +324,11 @@ local function _itemData()
     missileA = missiles(), -- Grasstown
     missileB = missiles(), -- Grasstown Hut
     missileC = missiles(), -- Egg Corridor?
-    missileD = missiles(), -- Egg Observation Room?
+    missileD = {           -- Egg Observation Room? (arbitrarily making this a second Super Missile chest)
+      name = "Super Missile Launcher",
+      script = "<EVE0033",
+      attributes = {"weapon", "missileLauncher", "nonProgressive"}
+    }, 
     missileHell = {
       name = "Missile Expansion",
       script = "<EVE0035",