Add health analyzer and medical scanner ECS (#6907)

Co-authored-by: fishfish458 <fishfish458>
Co-authored-by: metalgearsloth <comedian_vs_clown@hotmail.com>

Content.Server/Medical/Components/HealthAnalyzerComponent.cs

@@ -0,0 +1,27 @@
+using System.Threading;
+using Content.Server.UserInterface;
+using Content.Shared.MedicalScanner;
+using Robust.Server.GameObjects;
+
+namespace Content.Server.Medical.Components
+{
+    /// <summary>
+    ///    After scanning, retrieves the target Uid to use with its related UI.
+    /// </summary>
+    [RegisterComponent]
+    [ComponentReference(typeof(SharedHealthAnalyzerComponent))]
+    public sealed class HealthAnalyzerComponent : SharedHealthAnalyzerComponent
+    {
+        /// <summary>
+        /// How long it takes to scan someone.
+        /// </summary>
+        [DataField("scanDelay")]
+        [ViewVariables]
+        public float ScanDelay = 0.8f;
+        /// <summary>
+        ///     Token for interrupting scanning do after.
+        /// </summary>
+        public CancellationTokenSource? CancelToken;
+        public BoundUserInterface? UserInterface => Owner.GetUIOrNull(HealthAnalyzerUiKey.Key);
+    }
+}