feat(equipment): add larger OPLI internal missile racks

Add the missing OPLI internal missile racks for S3 and S4. Number and
types of missiles taken from descriptions in the relevant ship
definitions.

Other statistics (volume, mass, price) made up on the spot.

data/lang/equipment-core/en.json

@@ -523,10 +523,32 @@
     "description": "Equipment name for an OKB-Kaluri Bowfin internal missile launcher",
     "message": "Bowfin Missile Launcher"
   },
+
   "OPLI_INTERNAL_MISSILE_RACK_S2": {
     "description": "Equipment name for an OPLI internal missile rack",
     "message": "OPLI Internal Missile Rack"
   },
+  "OPLI_INTERNAL_MISSILE_RACK_S2_DESCRIPTION": {
+    "description": "Short description and tooltip.",
+    "message": "Internal missile bay for 5x medium missiles."
+  },
+  "OPLI_INTERNAL_MISSILE_RACK_S3": {
+    "description": "Equipment name for an OPLI internal missile rack",
+    "message": "OPLI Internal Missile Rack"
+  },
+  "OPLI_INTERNAL_MISSILE_RACK_S3_DESCRIPTION": {
+    "description": "Short description and tooltip.",
+    "message": "Internal missile bay for 8x medium missiles."
+  },
+  "OPLI_INTERNAL_MISSILE_RACK_S4": {
+    "description": "Equipment name for an OPLI internal missile rack",
+    "message": "OPLI Internal Missile Rack"
+  },
+  "OPLI_INTERNAL_MISSILE_RACK_S4_DESCRIPTION": {
+    "description": "Short description and tooltip.",
+    "message": "Internal missile bay for 12x medium missiles."
+  },
+
   "ORBIT_SCANNER": {
     "description": "A ship equipment that records data of terrain, for cartography mapping/geological survey. Note: Scout Mission module reference and distinguishes between 'orbital' and 'surface' scanner types, the former scans planet from orbit, the latter from low altitude.",
     "message": "Orbital scanner XKM-650"

data/modules/Equipment/Weapons.lua

@@ -397,6 +397,7 @@ Equipment.Register("missile_rack.111", EquipType.New {
 -- Internal Missile Bays
 --===============================================
 
+-- For the Coronatrix, Malabar, Sinonatrix (and Police), and Vatakara
 Equipment.Register("missile_bay.opli_internal_s2", EquipType.New {
 	l10n_key="OPLI_INTERNAL_MISSILE_RACK_S2",
 	price=150, purchasable=true, tech_level=1,
@@ -412,6 +413,48 @@ Equipment.Register("missile_bay.opli_internal_s2", EquipType.New {
 	icon_name="equip_missile_unguided"
 })
 
+-- For the Natrix, and Nerodia
+Equipment.Register("missile_bay.opli_internal_s3", EquipType.New {
+	l10n_key="OPLI_INTERNAL_MISSILE_RACK_S3",
+	price=450, purchasable=true, tech_level=5,
+	volume=8.5, mass=0.9,
+	slot = { type = "missile_bay.opli_internal", size=3, hardpoint=true },
+	provides_slots = {
+		Slot:clone { id = "1", type = "missile", size = 2, hardpoint = true },
+		Slot:clone { id = "2", type = "missile", size = 2, hardpoint = true },
+		Slot:clone { id = "3", type = "missile", size = 2, hardpoint = true },
+		Slot:clone { id = "4", type = "missile", size = 2, hardpoint = true },
+		Slot:clone { id = "5", type = "missile", size = 2, hardpoint = true },
+		Slot:clone { id = "6", type = "missile", size = 2, hardpoint = true },
+		Slot:clone { id = "7", type = "missile", size = 2, hardpoint = true },
+		Slot:clone { id = "8", type = "missile", size = 2, hardpoint = true },
+	},
+	icon_name="equip_missile_unguided"
+})
+
+-- For the Molar Ramsayi
+Equipment.Register("missile_bay.opli_internal_s4", EquipType.New {
+	l10n_key="OPLI_INTERNAL_MISSILE_RACK_S4",
+	price=950, purchasable=true, tech_level=7,
+	volume=11.0, mass=1.1,
+	slot = { type = "missile_bay.opli_internal", size=4, hardpoint=true },
+	provides_slots = {
+		Slot:clone { id = "1", type = "missile", size = 2, hardpoint = true },
+		Slot:clone { id = "2", type = "missile", size = 2, hardpoint = true },
+		Slot:clone { id = "3", type = "missile", size = 2, hardpoint = true },
+		Slot:clone { id = "4", type = "missile", size = 2, hardpoint = true },
+		Slot:clone { id = "5", type = "missile", size = 2, hardpoint = true },
+		Slot:clone { id = "6", type = "missile", size = 2, hardpoint = true },
+		Slot:clone { id = "7", type = "missile", size = 2, hardpoint = true },
+		Slot:clone { id = "8", type = "missile", size = 2, hardpoint = true },
+		Slot:clone { id = "9", type = "missile", size = 2, hardpoint = true },
+		Slot:clone { id = "10", type = "missile", size = 2, hardpoint = true },
+		Slot:clone { id = "11", type = "missile", size = 2, hardpoint = true },
+		Slot:clone { id = "12", type = "missile", size = 2, hardpoint = true },
+	},
+	icon_name="equip_missile_unguided"
+})
+
 Equipment.Register("missile_bay.bowfin_internal", EquipType.New {
 	l10n_key="OKB_KALURI_BOWFIN_MISSILE_RACK",
 	price=150, purchasable=true, tech_level=1,