Adds grappling gun (#16662)

Content.Shared/Weapons/Ranged/Components/BallisticAmmoProviderComponent.cs

@@ -22,6 +22,8 @@ public sealed partial class BallisticAmmoProviderComponent : Component
     [ViewVariables(VVAccess.ReadWrite), DataField("capacity")]
     public int Capacity = 30;
 
+    public int Count => UnspawnedCount + Container.ContainedEntities.Count;
+
     [ViewVariables(VVAccess.ReadWrite), DataField("unspawnedCount")]
     [AutoNetworkedField]
     public int UnspawnedCount;

Content.Shared/Weapons/Ranged/Components/GrapplingGunComponent.cs

@@ -0,0 +1,28 @@
+using Robust.Shared.Audio;
+using Robust.Shared.GameStates;
+
+namespace Content.Shared.Weapons.Ranged.Components;
+
+// I have tried to make this as generic as possible but "delete joint on cycle / right-click reels in" is very specific behavior.
+[RegisterComponent, NetworkedComponent, AutoGenerateComponentState]
+public sealed partial class GrapplingGunComponent : Component
+{
+    [DataField("jointId"), AutoNetworkedField]
+    public string Joint = string.Empty;
+
+    [DataField("projectile")] public EntityUid? Projectile;
+
+    [ViewVariables(VVAccess.ReadWrite), DataField("reeling"), AutoNetworkedField]
+    public bool Reeling;
+
+    [ViewVariables(VVAccess.ReadWrite), DataField("reelSound"), AutoNetworkedField]
+    public SoundSpecifier? ReelSound = new SoundPathSpecifier("/Audio/Weapons/reel.ogg")
+    {
+        Params = AudioParams.Default.WithLoop(true)
+    };
+
+    [ViewVariables(VVAccess.ReadWrite), DataField("cycleSound"), AutoNetworkedField]
+    public SoundSpecifier? CycleSound = new SoundPathSpecifier("/Audio/Weapons/Guns/MagIn/kinetic_reload.ogg");
+
+    public IPlayingAudioStream? Stream;
+}

Content.Shared/Weapons/Ranged/Components/RechargeCycleAmmoComponent.cs

@@ -0,0 +1,12 @@
+using Robust.Shared.GameStates;
+
+namespace Content.Shared.Weapons.Ranged.Components;
+
+/// <summary>
+/// Recharges ammo upon the gun being cycled.
+/// </summary>
+[RegisterComponent, NetworkedComponent]
+public sealed class RechargeCycleAmmoComponent : Component
+{
+
+}