src: added language package classes and moved indexer instantiation there

src/lib_java/LanguagePackageJava.cpp

@@ -0,0 +1,10 @@
+#include "LanguagePackageJava.h"
+
+#include "data/indexer/IndexerJava.h"
+
+std::vector<std::shared_ptr<IndexerBase>> LanguagePackageJava::instantiateSupportedIndexers() const
+{
+	return { 
+		std::make_shared<IndexerJava>()
+	};
+}