Extend message produced when a job is sent to Helix with a sender defined name

[maraf]

In dotnet/runtime in Wasm.Build.Tests, we send ~6 Helix jobs from a single AzDO job and it's complicated to find the right link to Helix job. The HelixJobName allows to define an "identifier" for each job and quickly find the right link in the text log.

To double check:

• The right tests are in and the right validation has happened. Guidance: https://github.com/dotnet/arcade/blob/main/Documentation/Validation.md

[maraf]

Without HelixJobName

Message: Sent Helix Job; see work items at https://helix.dot.net/api/jobs/a2340ced-c206-4746-8e1b-581c50767590/workitems?api-version=2019-06-17

With HelixJobName

Message: Sent Helix Job 'Arcade Job Name'; see work items at https://helix.dot.net/api/jobs/3fcc0c24-ccd3-42cc-a13f-975b59639dcd/workitems?api-version=2019-06-17