Port stethoscopes + innate verbs from nyano (#8228)

* port stethoscopes from nyanotrasen

* remove mono crash wtf

* don't touch puddle

* Switch to using action

* both verb and action

* Address reviews

Content.Server/Medical/Stethoscope/Components/StethoscopeComponent.cs

@@ -0,0 +1,28 @@
+using System.Threading;
+using Content.Shared.Actions.ActionTypes;
+using Robust.Shared.Utility;
+
+namespace Content.Server.Medical.Components
+{
+    /// <summary>
+    /// Adds an innate verb when equipped to use a stethoscope.
+    /// </summary>
+    [RegisterComponent]
+    public sealed class StethoscopeComponent : Component
+    {
+        public bool IsActive = false;
+
+        public CancellationTokenSource? CancelToken;
+
+        [DataField("delay")]
+        public float Delay = 2.5f;
+
+        public EntityTargetAction Action = new()
+        {
+            Icon = new SpriteSpecifier.Texture(new ResourcePath("Clothing/Neck/Misc/stethoscope.rsi/icon.png")),
+            Name = "stethoscope-verb",
+            Priority = -1,
+            Event = new StethoscopeActionEvent(),
+        };
+    }
+}

Content.Server/Medical/Stethoscope/Components/WearingStethoscopeComponent.cs

@@ -0,0 +1,18 @@
+using System.Threading;
+
+namespace Content.Server.Medical.Components
+{
+    /// <summary>
+    /// Used to let doctors use the stethoscope on people.
+    /// </summary>
+    [RegisterComponent]
+    public sealed class WearingStethoscopeComponent : Component
+    {
+        public CancellationTokenSource? CancelToken;
+
+        [DataField("delay")]
+        public float Delay = 2.5f;
+
+        public EntityUid Stethoscope = default!;
+    }
+}