Restructured the project structure back to the way it was, there's no reasonable way to split the modules

src/NadekoBot/_common/Patronage/Patron.cs

@@ -0,0 +1,38 @@
+namespace NadekoBot.Modules.Patronage;
+
+public readonly struct Patron
+{
+    /// <summary>
+    /// Unique id assigned to this patron by the payment platform
+    /// </summary>
+    public string UniquePlatformUserId { get; init; }
+
+    /// <summary>
+    /// Discord UserId to which this <see cref="UniquePlatformUserId"/> is connected to
+    /// </summary>
+    public ulong UserId { get; init; }
+
+    /// <summary>
+    /// Amount the Patron is currently pledging or paid
+    /// </summary>
+    public int Amount { get; init; }
+
+    /// <summary>
+    /// Current Tier of the patron
+    /// (do not question it in consumer classes, as the calculation should be always internal and may change)
+    /// </summary>
+    public PatronTier Tier { get; init; }
+
+    /// <summary>
+    /// When was the last time this <see cref="Amount"/> was paid
+    /// </summary>
+    public DateTime PaidAt { get; init; }
+
+    /// <summary>
+    /// After which date does the user's Patronage benefit end
+    /// </summary>
+    public DateTime ValidThru { get; init; }
+
+    public bool IsActive
+        => !ValidThru.IsBeforeToday();
+}