Basic SSO extension perf telemetry on MSAL side

[oldalton]

Proposed changes

Adding basic SSO extension performance telemetry for MSAL.Objective C. Note, it doesn't measure any actual performance inside the broker, it only provides info on MSAL side and sends it to ESTS telemetry. 1DS nor MATS won't give us this insight.

Type of change

• Feature work
• Bug fix
• Documentation
• Engineering change
• Test
• Logging/Telemetry

Risk

• High – Errors could cause MAJOR regression of many scenarios. (Example: new large features or high level infrastructure changes)
• Medium – Errors could cause regression of 1 or more scenarios. (Example: somewhat complex bug fixes, small new features)
• Small – No issues are expected. (Example: Very small bug fixes, string changes, or configuration settings changes)

Additional information

[azure-pipelines]

This pull request does not update CHANGELOG.md.

Please consider if this change would be noticeable to a partner or user and either update CHANGELOG.md or resolve this conversation.