Initial commit

Abstractions/IDeviceIdProvider.cs

@@ -0,0 +1,12 @@
+namespace RudderSdk.Core.Abstractions;
+
+/// <summary>
+/// Provides a stable device identifier for device login.
+/// The default is <see cref="GuidDeviceIdProvider"/>; games should provide a
+/// persistent one (Unity uses SystemInfo.deviceUniqueIdentifier).
+/// </summary>
+public interface IDeviceIdProvider
+{
+    /// <summary>Stable identifier of this device/install.</summary>
+    string DeviceId { get; }
+}