WIP - DONT MERGE - Issue/timestmap issue reproducer

src/main/java/net/openhft/chronicle/wire/TimestampReproducer.java

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+package net.openhft.chronicle.wire;
+
+import net.openhft.chronicle.wire.ServicesTimestampLongConverter;
+
+public class TimestampReproducer {
+    public static void main(String[] args) {
+        // Print out the configured time unit.
+        System.out.println("Configured time unit: " + ServicesTimestampLongConverter.timeUnit());
+
+        String isoTimestamp = "2025-03-04T09:58:14.201392128";
+        long parsedIso = ServicesTimestampLongConverter.INSTANCE.parse(isoTimestamp);
+        System.out.println("Parsed ISO timestamp: " + parsedIso + " (" + formatTimestamp(parsedIso) + ")");
+
+        // Example 2: A full numeric timestamp as seen before.
+        String numericTimestamp = "201392128";
+        long parsedNumeric = ServicesTimestampLongConverter.INSTANCE.parse(numericTimestamp);
+        System.out.println("Parsed full numeric timestamp: " + parsedNumeric + " (" + formatTimestamp(parsedNumeric) + ")");
+
+        // Example 3: A truncated numeric timestamp (simulating missing leading zeros).
+        String truncatedTimestamp = "201392";
+        long parsedTruncated = ServicesTimestampLongConverter.INSTANCE.parse(truncatedTimestamp);
+        System.out.println("Parsed truncated numeric timestamp: " + parsedTruncated + " (" + formatTimestamp(parsedTruncated) + ")");
+    }
+
+    /**
+     * Helper method to convert the parsed timestamp (in the configured time unit) to a human-readable date.
+     * This example assumes that the configured unit is nanoseconds.
+     */
+    private static String formatTimestamp(long timestamp) {
+        long millis = timestamp;
+        if (ServicesTimestampLongConverter.timeUnit().equals(java.util.concurrent.TimeUnit.NANOSECONDS)) {
+            millis = timestamp / 1_000_000;
+        } else if (ServicesTimestampLongConverter.timeUnit().equals(java.util.concurrent.TimeUnit.MICROSECONDS)) {
+            millis = timestamp / 1_000;
+        }
+        return new java.util.Date(millis).toString();
+    }
+}