Add double mattress

Resources/Locale/ru-RU/_LostParadise/prototypes/entities/structures/furniture/mattress_double.ftl

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+ent-LPPMattressDoubleUp = Двойной матрас
+    .desc = Лучше спать на полу, чем так, я думаю.
+ent-LPPMattressDoubleDown = Двойной матрас
+    .desc = Лучше спать на полу, чем так, я думаю.

Resources/Prototypes/_LostParadise/Entities/Structures/Furniture/mattress_double.yml

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+# UP SIDE:
+
+- type: entity
+  name: mattress double up
+  id: LPPMattressDoubleUp
+  parent: BaseStructure
+  description: Better to sleep on the floor than this, I think.
+  components:
+  - type: HealOnBuckle
+    damage:
+      types:
+        Poison: -0.5
+        Blunt: -0.2
+  - type: Physics
+    bodyType: Static
+  - type: Fixtures
+    fixtures:
+      fix1:
+        shape:
+          !type:PhysShapeAabb
+          bounds: "-0.45,-0.45,0.45,0.55"
+        density: 190
+        mask:
+        - TableMask
+  - type: Sprite
+    sprite: _LostParadise/Structures/Furniture/double_mattress.rsi
+    state: mattress_double_up
+    noRot: true
+  - type: Strap
+    position: Down
+    rotation: -90
+    buckleOffset: "0,0.20"
+  - type: PlaceableSurface
+    placeCentered: true
+  - type: Damageable
+    damageContainer: Inorganic
+    damageModifierSet: Metallic
+  - type: Destructible
+    thresholds:
+    - trigger:
+        !type:DamageTrigger
+        damage: 75
+      behaviors:
+      - !type:DoActsBehavior
+        acts: ["Destruction"]
+      - !type:SpawnEntitiesBehavior
+        spawn:
+          SheetSteel1:
+            min: 1
+            max: 2
+  - type: Transform
+    anchored: true
+    noRot: true
+  - type: Anchorable
+  - type: Pullable
+
+
+# DOWN SIDE:
+
+- type: entity
+  parent: LPPMattressDoubleUp
+  id: LPPMattressDoubleDown
+  name: mattress double down
+  description: Better to sleep on the floor than this, I think.
+  components:
+  - type: Sprite
+    state: mattress_double_down
+  - type: Damageable
+    damageModifierSet: Inflatable
+  - type: Strap
+    position: Down
+    rotation: -90
+    buckleOffset: "0,-0.2"

Resources/Textures/_LostParadise/Structures/Furniture/double_mattress.rsi/meta.json

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+{
+  "version": 1,
+  "license": "CC-BY-SA-3.0",
+  "copyright": "Draw by Fuchsia: https://github.com/FuchsiaThePhoenix",
+  "size": {
+    "x": 32,
+    "y": 32
+  },
+  "states": [
+    {
+      "name": "mattress_double"
+    },
+    {
+      "name": "mattress_double_down"
+    },
+    {
+      "name": "mattress_double_up"
+    }
+  ]
+}