QL: add test for ql/missing-parameter-qldoc

Author: erik-krogh

ql/ql/test/queries/style/MissingParameterInQlDoc/Foo.qll

@@ -0,0 +1,14 @@
+/** `param1`, `param2`, and `param3` are the parameters. */
+predicate test1(int param1, int param2, int param3) { none() } // OK
+
+/** `param1`, `par2` */
+predicate test2(int param1, int param2) { none() } // NOT OK - `par2` is not a parameter, and `param2` has no documentation
+
+/** `param1`, `par2 + par3` */
+predicate test3(int param1, int par2, int par3) { none() } // OK
+
+/** this mentions no parameters */
+predicate test4(int param1, int param2) { none() } // OK - the QLDoc mentions none of the parameters, that's OK
+
+/** the param1 parameter is mentioned in a non-code block, but the `par2` parameter is misspelled */
+predicate test5(int param1, int param2) { none() } // NOT OK - the `param1` parameter is "documented" in clear text, but `par2` is misspelled

ql/ql/test/queries/style/MissingParameterInQlDoc/MissingParameterInQlDoc.expected

@@ -0,0 +1,2 @@
+| Foo.qll:5:1:5:50 | ClasslessPredicate test2 | The QLDoc has no documentation for param2, but the QLDoc mentions par2 |
+| Foo.qll:14:1:14:50 | ClasslessPredicate test5 | The QLDoc has no documentation for param2, but the QLDoc mentions par2 |

ql/ql/test/queries/style/MissingParameterInQlDoc/MissingParameterInQlDoc.qlref

@@ -0,0 +1 @@
+queries/style/MissingParameterInQlDoc.ql