* Incremental fixes
* Fix base assignment of async delegate block reference
* Reuse existing memory blocks
* Remove PlaybackStarted child activity
The PlaybackStarted property is unnecessary, since the PlayAudio activity already completes right after playback has started.
* Add GetCallStatus API method
* Prevent variables on composite activities to be overwritten during deserialization
* Remove unnecessary variable declarations
Activity variables will be declared automatically during activity invocation.
* Add XML comments
* Remove unused references arg
* Streamline variable identity assignment
* Fix composite early exit completion
* Move identity assignment to workflow definition service
* Incremental work on Telnyx integration
* Incremental port of Telnyx activities
* Fix polymorphic JSON serialization for webhook data
* Fix IsFirstPass logic
* Fix trigger base to prevent activity auto completion
* Temporarily disable persistent snapshotting provider for testing
* Fix namespaces
* Add method to register activities in bulk using marker type
* Fix Telnyx refit client setup
* Register all Telnyx activities by default
* Incremental work on webhook driven resumption and correlation
* Incremental work on post-bookmark signaling
* Fix bookmark resolution
* Include correlation ID with bookmark
* Fix Telnyx resumption input
* Replace bookmark persisted signal with handler
* Fix SpeakText completion
* Add flow outcomes to SpeakText activity
* Update GatherUsingSpeak and GatherUsingaudio
* Refactor "is first pass" concept
* Fix WebhookEvent activity
* Add HTTP absolute URL provider
* Formatting and small changes
* Various API enhancements
* Update job activities handler
Looks like somehow implicit global usings have been removed or disabled 🤔
* Implement background activity execution
* Checkbox UI improvements
* Implement Task configuration for asynchronous execution
* Make job queue hosted service process jobs in parallel
* Make job worker count configurable
* Delete DefaultWorkflowInvoker.cs
* Incremental work
* Refactor runtime
* Implement workflow state store + bookmark store
* Cleanup
* Update migrations
* Move store abstractions to management and runtime projects
* Consolidate persistence providers into single package
* Generate migrations
* Regenerate migrations
* Fix DI of memory stores
* Update migrations
* Refactor definition reference due to unserializable record
* Update web server bundle to use EF core by default
* Update Bookmark.cs
Fixes System Text Json deserialization
* Initial working grain
* Incremental work on actor bookmark management & resuming wokflows
* Upgrade Proto Actor package references
* Fix lifetime of actors
* Implement bookmark and resumption
* Update Program.cs
* Update bookmark event publishing
* Refactor proto actor features API
* Implement snapshotting
* Update snapshotting
* Add in-memory provider and use it by default
* Update server bundle to use proto actor sqlite persistence by default
* Incremental work on custom activities
* Incremental work on refactoring versioned entities
* Add ActivityDefinition infrastructure
* Incremental work on activity definition manager
* Incremental work on API endpoints
* Refactored flowchart component to include hierarchical nav
* Incremental work on modularization of designer component
* Restructuring into modules
* Rename CustomActivities module
* Apply security
* Fix activity definition GET endpoint
* Incremental work on activity definition provider
* Incremental work on activity definition execution
* Update ActivityDefinitionMaterializer.cs
* Update ActivityDefinitionActivityProvider.cs
* Add activity definition referenced version update handler
* Maintain position of not found activity
* Fix prefix naming
