chore: add test configuration options for running tests against multiple products (#5964)

* chore: remove "Extracting..." log message

Fixes #5741.

* test: support extra Launcher options and skips

The extra Launcher options and skipping conditions enable
unit tests to be run more easily by third-parties, e.g.
browser vendors that are interested in Puppeteer support.

Extra Launcher options were previously removed as part of
switching away from the custom test harness.

* test: enable more tests for Firefox

src/BrowserFetcher.ts

@@ -429,9 +429,6 @@ function extractTar(tarPath: string, folderPath: string): Promise<unknown> {
     tarStream.on('error', reject);
     tarStream.on('finish', fulfill);
     const readStream = fs.createReadStream(tarPath);
-    readStream.on('data', () => {
-      process.stdout.write('\rExtracting...');
-    });
     readStream.pipe(bzip()).pipe(tarStream);
   });
 }