file drop support

- Add a folder where you can drop Zip files which will then be
  extracted on the fly and ingsted.
- CsvReaderSettings now contain TagMatcher that are applied to the
  first line and can be used to extract additional tags.
- Update to jdk 16 so that we can have records.

data-store/src/main/java/org/lucares/pdb/datastore/Entries.java

@@ -7,7 +7,6 @@ import java.util.Iterator;
 import java.util.List;
 import java.util.concurrent.CountDownLatch;
 import java.util.concurrent.TimeUnit;
-import java.util.concurrent.TimeoutException;
 
 /**
  * Wrapper for chunk of {@link Entry}s.
@@ -71,10 +70,10 @@ public class Entries implements Iterable<Entry> {
     }
 
     public void waitUntilFlushed(final long timeout, final TimeUnit unit)
-            throws InterruptedException, TimeoutException {
+            throws InterruptedException, RuntimeTimeoutException {
         final boolean finished = flushLatch.await(timeout, unit);
         if (!finished) {
-            throw new TimeoutException();
+            throw new RuntimeTimeoutException();
         }
     }
 

data-store/src/main/java/org/lucares/pdb/datastore/RuntimeTimeoutException.java

@@ -0,0 +1,7 @@
+package org.lucares.pdb.datastore;
+
+public class RuntimeTimeoutException extends RuntimeException {
+
+    private static final long serialVersionUID = -7159091069429132434L;
+
+}