Resolve "new API endpoint for stacktrace and error reporting"

Closes #2181 (closed)

service/src/main/java/lcsb/mapviewer/services/http/HttpClientFactory.java

+package lcsb.mapviewer.services.http;
+
+import org.apache.http.impl.client.CloseableHttpClient;
+
+public interface HttpClientFactory {
+  CloseableHttpClient create();
+}