Telemetry: add measurements

[compulim]

Feature Request

Customization

• Count how many instance of Web Chat has customized the following properties:
  • activityMiddleware
  • activityStatusMiddleware
  • attachmentMiddleware
  • cardActionMiddleware
  • toastMiddleware
  • styleOptions

Speech

• Differentiate engines used in speech recognition and speech synthesis

[Enhancement]

[compulim]

Moving from R9 to Backlog because IC3 do not need this before October.

We will add telemetry measurements slowly, similar to how we add tests today.