Move test fixtures to samples/

samples/logtalk/foo.lgt

@@ -0,0 +1,9 @@
+% this is a Logtalk source file
+
+:- object(hello_world).
+
+	% the initialization/1 directive argument is automatically executed
+	% when the object is loaded into memory:
+	:- initialization((nl, write('********** Hello World! **********'), nl)).
+
+:- end_object.