Initialize Windows desktop skeleton

WirelessTextSyncer.Windows/Models/SyncAction.cs

@@ -0,0 +1,9 @@
+namespace WirelessTextSyncer.Windows.Models;
+
+public enum SyncAction
+{
+    InsertText,
+    Backspace,
+    Enter,
+    Ping
+}

WirelessTextSyncer.Windows/Models/SyncMessage.cs

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+using System.Text.Json.Serialization;
+
+namespace WirelessTextSyncer.Windows.Models;
+
+public sealed record SyncMessage
+{
+    [JsonPropertyName("action")]
+    public SyncAction Action { get; init; }
+
+    [JsonPropertyName("text")]
+    public string? Text { get; init; }
+}