* add ElsaDbContextOptions
* set Schema from elsaDbContextOptions
* file rename
* add options as arg to DbContextOptionsBuilderExtensions
* add options to module extensions in Elsa.EntityFrameworkCore.MySql
* add options to module extensions in Elsa.EntityFrameworkCore.PostgreSql
* add options to module extensions in Elsa.EntityFrameworkCore.Sqlite
* add options to module extensions in Elsa.EntityFrameworkCore.SqlServer
* add validations
* update doc strings
* Incremental work on samples
* Rename HTTP middleware and update samples
* Rename HTTP Activities to Workflows
* Automatically register core activities when adding Elsa
* Fix feature registration bug
* Add default auth feature
* Make activity serializer more flexible
* Bump designer version
* Add workflow server + designer samples
* Simplify EntityFrameworkCore projects
* Update solution
* Add Sqlite package references to ensure the correct version is used
* Update sample project with EF Core
* Update EF extensions
* Add server + designer sample project
* Cleanup AllInOne project and add some XML comments
* Rename ci.yml and add CI for Docker file
