Add parts to build the codeql database in steps and provide log for comparison

session/simple.ql

@@ -0,0 +1,13 @@
+/**
+ * @name simple test
+ * @description simple test
+ * @kind problem
+ * @id cpp/simple
+ * @problem.severity warning
+ */
+
+import java
+
+from Call read
+where read.getCallee().getName() = "readLine"
+select read, "Found readline"