Warnings

[AlexanderMoiseev]

'reportWarnings' method support https://github.com/DevExpress/testcafe/pull/6531

Sone notes:

• testRunIdToTestIdMap used to map testRunId to TestId since new reportWarnings method does not provide testId in its args
• although second warnings upload ( in reportTaskDone ) waits for all uploads to complete, the upload itself on aws side may be finished after we send reportTaskDone event to dashboard, resulting in the dashboard UI not updating reactively, we may need to attend to this problem later
• for some warnings 'reportWarning' method called several times by testcafe, i've contacted Andrey Belym regarding this matter https://github.com/DevExpress/testcafe/issues/6605