* Refactor Telnyx activities to use instance ID for correlating events
* Ensure SetVariable sets value in correct scope
* Fix race condition between new instances that are being resumed
* Fix tests
* Fixed getting and setting variables in context
* Added unit tests
* Add test for named variable
* Search variable in parent contexts
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Co-authored-by: Sipke Schoorstra <sipkeschoorstra@outlook.com>
* Adding set var and main/sub workflow tests
* Deprecate SetWorkflowOutput and replace with SetOutput
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Co-authored-by: Sipke Schoorstra <sipkeschoorstra@outlook.com>