Trading Outpost now has half buy-only and half sell-only pallets (#25955)

* Added new Buy & Sell specific cargo pallets

* Remapped trading outpost with new pallets, tweaked texture

* Removed debug message

* Fixed/Compacted conditional checking to let old pallets still work for backwards compatability

* Update Content.Server/Cargo/Components/CargoPalletComponent.cs

Alright, updating all the references to it.

Co-authored-by: Tayrtahn <tayrtahn@gmail.com>

* Changed textures, changed to enum instead of string for pallet type check

* Few minor code tweaks/formatting fixes

* Missed the prototype change

* Update Content.Server/Cargo/Components/CargoPalletComponent.cs

* Update Content.Server/Cargo/Systems/CargoSystem.Shuttle.cs

---------

Co-authored-by: Tayrtahn <tayrtahn@gmail.com>
Co-authored-by: metalgearsloth <31366439+metalgearsloth@users.noreply.github.com>

Resources/Prototypes/Entities/Objects/Specific/Cargo/cargo_pallet.yml

@@ -21,6 +21,7 @@
         mask:
           - MachineMask
   - type: CargoPallet
+    palletType: All
   - type: StaticPrice
     price: 100
   - type: Sprite
@@ -53,3 +54,33 @@
   - type: GuideHelp
     guides:
     - Cargo
+
+- type: entity
+  id: CargoPalletSell
+  name: cargo selling pallet
+  description: Designates valid items to sell with a selling computer, or to CentCom when a shuttle is recalled.
+  parent: CargoPallet
+  components:
+  - type: CargoPallet
+    palletType: sell
+  - type: Sprite
+    drawdepth: FloorTiles
+    layers:
+    - sprite: Structures/cargo_pallets.rsi
+      state: cargo_pallet_sell
+
+
+- type: entity
+  id: CargoPalletBuy
+  name: cargo buying pallet
+  description: Designates where orders will appear when purchased.
+  parent: CargoPallet
+  components:
+  - type: CargoPallet
+    palletType: buy
+  - type: Sprite
+    drawdepth: FloorTiles
+    layers:
+    - sprite: Structures/cargo_pallets.rsi
+      state: cargo_pallet_buy
+