* Add caching for scripts in Jint JavaScript engine
A new feature has been implemented to cache the scripts in the Jint JavaScript engine for performance improvement. A new property, "ScriptCacheTimeout", has been introduced to determine the script caching duration. The scripts will be recompiled after the specified duration has elapsed. If the value is null, the scripts will be cached indefinitely. Also, dependencies and changes have been made in the relevant classes to support this feature.
* Set default value for ScriptCacheTimeout in JintOptions
The change sets a default value for the ScriptCacheTimeout property in the JintOptions.cs file. Previously, ScriptCacheTimeout did not have a default value. Now, ScriptCacheTimeout defaults to one day if no other value is specified.
* Refactor JsonSerializerOptions creation in JintJavaScriptEvaluator
This change breaks down the creation of JsonSerializerOptions into several lines to improve readability. It also keeps JavaScriptEncoder as the encoder but presents the creation of the object in a more explicit manner.
* Implement Alteration types and engine
* Implement Alteration APIs
* Refactor activity work item with support for activity input
* Serialize scheduled activities as part of workflow state
* Add signal to schedule child activity
* Implement stores for plans and jobs
* Add EF Core provider
* Add Retry endpoint
* Keep root context as always active. The root context is the workflow execution context and contains persistent variable state
* Regenerate EF Core migrations
* Handle orphaned activity execution contexts
* Refactor workflow execution factory
* Enable configuring Jint from Program
* Update ModifyVariable alteration with support for type deserialization
* Use ShortGuid for identity
* Cleanup WorkflowServer host
