add option to ignore market buy

EDPlayerJournal/BGS/TransactionParser.cs

@@ -14,6 +14,14 @@ public class TransactionParserOptions {
     /// primary faction for the influence.
     /// </summary>
     public bool IgnoreInfluenceSupport { get; set; } = false;
+
+    /// <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
+    /// a market to aid the faction the stuff is being sold to. So allow it to be
+    /// disabled.
+    /// </summary>
+    public bool IgnoreMarketBuy { get; set; } = false;
 }
 
 public class TransactionList : List<Transaction> {
@@ -627,6 +635,10 @@ internal class SearchAndRescueParser : TransactionParserPart {
 
 internal class MarketBuyParser : TransactionParserPart {
     public void Parse(Entry e, TransactionParserContext context, TransactionParserOptions options, TransactionList transactions) {
+        if (options.IgnoreMarketBuy) {
+            return;
+        }
+
         MarketBuyEntry? entry = e as MarketBuyEntry;
         if (entry == null) {
             throw new NotImplementedException();