test: add WPT user-timing tests (#32123)

As discussed in
https://github.com/servo/servo/pull/32120#issuecomment-2068017033, this
adds the WPT `user-timing` tests to the default list of WPT tests, and
also commits the current status of the `user-timing` tests.


---
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- [x] There are tests for these changes

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tests/wpt/meta/user-timing/measure_syntax_err.any.js.ini

@@ -0,0 +1,26 @@
+[measure_syntax_err.any.html]
+  [self.performance.measure("measure", "mark"), where "mark" is a non-existent mark, throws a SyntaxError exception.]
+    expected: FAIL
+
+  [self.performance.measure("measure", "mark", "existing_mark"), where "mark" is a non-existent mark, throws a SyntaxError exception.]
+    expected: FAIL
+
+  [self.performance.measure("measure", "existing_mark", "mark"), where "mark" is a non-existent mark, throws a SyntaxError exception.]
+    expected: FAIL
+
+  [self.performance.measure("measure", "mark", "mark"), where "mark" is a non-existent mark, throws a SyntaxError exception.]
+    expected: FAIL
+
+
+[measure_syntax_err.any.worker.html]
+  [self.performance.measure("measure", "mark"), where "mark" is a non-existent mark, throws a SyntaxError exception.]
+    expected: FAIL
+
+  [self.performance.measure("measure", "mark", "existing_mark"), where "mark" is a non-existent mark, throws a SyntaxError exception.]
+    expected: FAIL
+
+  [self.performance.measure("measure", "existing_mark", "mark"), where "mark" is a non-existent mark, throws a SyntaxError exception.]
+    expected: FAIL
+
+  [self.performance.measure("measure", "mark", "mark"), where "mark" is a non-existent mark, throws a SyntaxError exception.]
+    expected: FAIL