Added test case for package diagram from directory structure

tests/t30010/libraries/lib1/lib1.h

@@ -0,0 +1,11 @@
+#pragma once
+
+namespace clanguml {
+namespace t30010 {
+namespace library1 {
+
+struct A { };
+
+}
+}
+}

tests/t30010/libraries/lib2/lib2.h

@@ -0,0 +1,13 @@
+#pragma once
+
+namespace clanguml {
+namespace t30010 {
+namespace library2 {
+
+template <typename T> struct B {
+    T b;
+};
+
+}
+}
+}

tests/t30010/libraries/lib3/lib3.h

@@ -0,0 +1,11 @@
+#pragma once
+
+namespace clanguml {
+namespace t30010 {
+namespace library3 {
+
+enum E { e1, e2, e3 };
+
+}
+}
+}

tests/t30010/libraries/lib4/lib4.h

@@ -0,0 +1,11 @@
+#pragma once
+
+namespace clanguml {
+namespace t30010 {
+namespace library4 {
+
+struct C { };
+
+}
+}
+}