tests FEATURE include tests into build system

basic tests of ly_set implementation
diff --git a/tests/ld.supp b/tests/ld.supp
new file mode 100644
index 0000000..53876b6
--- /dev/null
+++ b/tests/ld.supp
@@ -0,0 +1,10 @@
+{
+   <insert_a_suppression_name_here>
+   Memcheck:Leak
+   match-leak-kinds: reachable
+   fun:calloc
+   fun:_dlerror_run
+   fun:dlopen@@GLIBC_2.2.5
+   fun:lyext_load_plugins
+   fun:ly_ctx_new
+}