Added test case documentation generator

docs/test_cases/t00002.md

@@ -0,0 +1,63 @@
+# t00002 - Basic class inheritance
+## Config
+```yaml
+compilation_database_dir: ..
+output_directory: puml
+diagrams:
+  t00002_class:
+    type: class
+    glob:
+      - ../../tests/t00002/t00002.cc
+    using_namespace:
+      - clanguml::t00002
+    include:
+      namespaces:
+        - clanguml::t00002
+
+```
+## Source code
+```cpp
+#include <vector>
+
+namespace clanguml {
+namespace t00002 {
+
+class A {
+public:
+    virtual void foo_a() = 0;
+    virtual void foo_c() = 0;
+};
+
+class B : public A {
+public:
+    virtual void foo_a() override {}
+};
+
+class C : public A {
+public:
+    virtual void foo_c() override {}
+};
+
+class D : public B, public C {
+public:
+    void foo_a() override
+    {
+        for (auto a : as)
+            a->foo_a();
+    }
+
+    void foo_c() override
+    {
+        for (auto a : as)
+            a->foo_c();
+    }
+
+private:
+    std::vector<A *> as;
+};
+}
+}
+
+```
+## Generated UML diagrams
+![t00002_class](./t00002_class.png "Basic class inheritance")