Migrate from MongoDB to Couchbase Lite for local storage; update related services and configurations

Services/Auth/AuthUser.cs

@@ -0,0 +1,12 @@
+namespace WorkTracker.Services.Auth;
+
+public sealed class AuthUser
+{
+    public string Id { get; init; } = string.Empty;
+
+    public string Email { get; init; } = string.Empty;
+
+    public string EmailNormalized { get; init; } = string.Empty;
+
+    public string PasswordHash { get; init; } = string.Empty;
+}