logic: Added "Empty Python" Sourcegroup to project setup

The respective release of the SourcetrailPythonIndexer project is automatically downloaded from GitHub when the setup script is executed.

src/lib_java/data/indexer/IndexerJava.cpp

@@ -8,9 +8,9 @@ IndexerJava::~IndexerJava()
 }
 
 void IndexerJava::doIndex(
-		std::shared_ptr<IndexerCommandJava> indexerCommand,
-		std::shared_ptr<ParserClientImpl> parserClient,
-		std::shared_ptr<IndexerStateInfo> m_indexerStateInfo
+	std::shared_ptr<IndexerCommandJava> indexerCommand,
+	std::shared_ptr<ParserClientImpl> parserClient,
+	std::shared_ptr<IndexerStateInfo> m_indexerStateInfo
 ){
 	JavaParser(parserClient, m_indexerStateInfo).buildIndex(indexerCommand);
 }