Issue #47: Add a new column to indicate if a connector is enterprise

* Added a stream filter to exclude empty and blank lines.

src/main/java/org/sentrysoftware/maven/metricshub/connector/AbstractConnectorReport.java

@@ -129,6 +129,8 @@ public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) throws IO
 					Files
 						.readAllLines(file)
 						.stream()
+						.map(String::trim)
+						.filter(line -> !line.isEmpty())
 						.map(filename -> filename.substring(0, filename.lastIndexOf('.')))
 						.collect(Collectors.toCollection(ArrayList::new));