k6 Run Configuration feature

[mbolotov]

Please introduce Run Configuration feature for k6 test script execution.
This feature allows running k6 scripts in common way as other tools are executed within IntelliJ platform.
Beside that, a run configuration can be configured to build the project automatically before execution and so allowing to run a TypeScript k6 test in a one click.

[ppcano]

Given how Thresholds works:

In the above case, the criteria for both thresholds were met. The whole load test is considered to be a pass, which means that k6 will exit with exit code zero.
If any of the thresholds had failed, the little green checkmark ✓ next to the threshold name (http_req_failed, http_req_duration) would have been a red cross ✗ instead, and k6 would have generated a non-zero exit code.

The run configuration should read the k6 CLI exit code to mark the test as Pass or Failure.