add option to ignore powerplay for now

EDPlayerJournal/BGS/TransactionParser.cs

@@ -16,6 +16,12 @@ public class TransactionParserOptions {
     /// </summary>
     public bool IgnoreInfluenceSupport { get; set; } = false;
 
+    /// <summary>
+    /// Whether we ignore power play and merits gained for now. Support for this
+    /// is experimental at the moment, so that is why it ist `true`.
+    /// </summary>
+    public bool IgnorePowerplay { get; set; } = true;
+
     /// <summary>
     /// Whether to ignore market buy. Buying from a market gives a small amount
     /// of INF if it is sold to a high demand market, but generally one buys from