Added package-info for printer

Author: dabico

src/main/java/ch/usi/si/seart/treesitter/printer/package-info.java

@@ -0,0 +1,6 @@
+/**
+ * Provides parse tree serialization utilities.
+ *
+ * @since 1.2.0
+ */
+package ch.usi.si.seart.treesitter.printer;