feat(cli/tools): add TAP test reporter (#14390) (#20073)

This PR adds a test reporter for the [Test Anything
Protocol](https://testanything.org).

It makes the following implementation decisions:
- No TODO pragma, as there is no such marker in `Deno.test`
- SKIP pragma for `ignore`d tests
- Test steps are treated as TAP14 subtests
  - Support for this in consumers seems spotty
- Some consumers will incorrectly interpret these markers, resulting in
unexpected output
- Considering the lack of support, and to avoid implementation
complexity,
subtests are at most one level deep (all test steps are in the same
subtest)
- To accommodate consumers that use comments to indicate test-suites
(unspecced)
  - The test module path is output as a comment
  - This is disabled for `--parallel` testing
- Failure diagnostics are output as JSON, which is also valid YAML
- The structure is not specified, so the format roughly follows the spec
example:
  ```
  ---
  message: "Failed with error 'hostname peebles.example.com not found'"
  severity: fail
  found:
    hostname: 'peebles.example.com'
    address: ~
  wanted:
    hostname: 'peebles.example.com'
    address: '85.193.201.85'
  at:
    file: test/dns-resolve.c
    line: 142
  ...
  ```
  

1 files changed, 4 insertions, 0 deletions

diff --git a/cli/tools/test/mod.rs b/cli/tools/test/mod.rs
index 365b83268..9ad205e2e 100644
--- a/cli/tools/test/mod.rs
+++ b/cli/tools/test/mod.rs
@@ -89,6 +89,7 @@ use reporters::CompoundTestReporter;
 use reporters::DotTestReporter;
 use reporters::JunitTestReporter;
 use reporters::PrettyTestReporter;
+use reporters::TapTestReporter;
 use reporters::TestReporter;
 
 /// The test mode is used to determine how a specifier is to be tested.
@@ -404,6 +405,9 @@ fn get_test_reporter(options: &TestSpecifiersOptions) -> Box<dyn TestReporter> {
     TestReporterConfig::Junit => {
       Box::new(JunitTestReporter::new("-".to_string()))
     }
+    TestReporterConfig::Tap => Box::new(TapTestReporter::new(
+      options.concurrent_jobs > NonZeroUsize::new(1).unwrap(),
+    )),
   };
 
   if let Some(junit_path) = &options.junit_path {