Add smoke test checker

[szkiba]

The check should be successful if there is a smoke test script and it runs successfully with the k6 built with the extension.

Obviously, a prerequisite for a successful run is that the build checker runs successfully, otherwise k6 cannot be built with the extension.

The smoke test script file ishould be searched for in the root of the repository and in the test,tests,examples directories. The name of the smoke test script is one of the following:

• smoke.js
• smoke.ts
• smoke.test.js
• smoke.test.ts