This commit completely removes the Elsa.Expressions.Dsl module, including all associated features, services, models, and dependencies. The DSL functionality, including its custom activities and integration options, has been fully eliminated from the project.
* Initial implementation of workflow inbox, submission and delivery
* Implement persistence providers
* Update EF Core migrations
* Rename Services to Stores in Dapper module
* Use default serializer for primitive arrays
* Update MongoDB provider to map BookmarkId to be primary key
* Implement MongoDB provider for activity execution logs
* Use EF Core by default
* Fix private JSON constructor logic
