feat: use sqlite instead of inmemory state persistence (#10)

Author: jobulcke

src/main/java/be/vlaanderen/informatievlaanderen/ldes/gitb/ldio/pipeline/LdioLdesClientBuilder.java

@@ -5,7 +5,12 @@
 
 public class LdioLdesClientBuilder extends LdioComponentBuilder {
 	public LdioLdesClientBuilder() {
-		super("Ldio:LdesClient", new HashMap<>(Map.of("source-format", "application/n-quads")));
+		super("Ldio:LdesClient",
+				new HashMap<>(Map.of(
+						"source-format", "application/n-quads",
+						"state", "sqlite"
+				))
+		);
 	}
 
 	public LdioLdesClientBuilder withUrl(String url) {

src/test/resources/ldio-pipeline.json

@@ -6,6 +6,7 @@
     "config": {
       "urls": "http://test-server/test-collection",
       "source-format": "application/n-quads",
+      "state": "sqlite",
       "timestamp-path": "http://www.w3.org/ns/prov#generatedAtTime",
       "materialisation": {
         "enabled": true,