Implement player PoC (#7)

src/Recordingtest.Player/Model/Scenario.cs

@@ -0,0 +1,28 @@
+namespace Recordingtest.Player.Model;
+
+public sealed class Scenario
+{
+    public string Name { get; set; } = string.Empty;
+    public string Description { get; set; } = string.Empty;
+    public SutInfo Sut { get; set; } = new();
+    public List<Step> Steps { get; set; } = new();
+    public List<Checkpoint> Checkpoints { get; set; } = new();
+    public List<Baseline> Baselines { get; set; } = new();
+}
+
+public sealed class SutInfo
+{
+    public string Exe { get; set; } = string.Empty;
+    public int StartupTimeoutMs { get; set; } = 15000;
+}
+
+public sealed class Checkpoint
+{
+    public int AfterStep { get; set; }
+    public string SaveAs { get; set; } = string.Empty;
+}
+
+public sealed class Baseline
+{
+    public string Path { get; set; } = string.Empty;
+}