Record domain transaction for DomainRestoreFlow

This is the first of many cls adding explicit logging in all our domain mutation flows to facilitate transaction reporting.

Restores are relatively simple- it happens immediately, so the reporting time is just the time of the HistoryEntry, and we add a single "RESTORED_DOMAINS" count of 1.

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=165639084

java/google/registry/model/reporting/DomainTransactionRecord.java

@@ -130,6 +130,10 @@ public class DomainTransactionRecord extends ImmutableObject implements Buildabl
     return tld;
   }
 
+  public Set<TransactionFieldAmount> getTransactionFieldAmounts() {
+    return transactionFieldAmounts;
+  }
+
   @Override
   public Builder asBuilder() {
     return new Builder(clone(this));