render Markdown and support link navigation in KDoc comments

idea/testData/editor/quickDoc/OnMethodUsageWithSee.kt

@@ -0,0 +1,20 @@
+/**
+ * @see C
+ * @see D
+ */
+fun testMethod() {
+
+}
+
+class C {
+}
+
+class D {
+}
+
+fun test() {
+    <caret>testMethod(1, "value")
+}
+
+//INFO: <b>internal</b> <b>fun</b> testMethod(): Unit<br/><p>
+//INFO: <DD><DL><DT><b>See Also:</b><DD><a href="psi_element://C"><code>C</code></a>, <a href="psi_element://D"><code>D</code></a></DD></DL></DD></p>