[DMS-26] Generate dependencies (#193)

* Generate dependencies at runtime based on apischema.json

* cleanup

* Use real endpoint

* Tests should pass

* Cleanup

* Cleanup

* clean up tests

* Remove trace asserts to see if branch coverage improves

* Trying this to determine a baseline

* Add a little more code

* Add a little more code

* Remove code branch

* Try this

* More simplification

* Use ResourceSchema object

* Null check

* Light refactor

* Add helper extension to JsonNode

* Extract Dependency calculation to dedicated class

* Add a couple assertions

* Add DependencyCaclculatorTests

* Use plural resource name, more tests

* Test algorithm

* Simplify

* Remove comment

* Fix misnamed variables

src/core/EdFi.DataManagementService.Core.External/Interface/IApiService.cs

@@ -4,6 +4,7 @@
 // See the LICENSE and NOTICES files in the project root for more information.
 using EdFi.DataManagementService.Core.External.Model;
 using EdFi.DataManagementService.Core.External.Frontend;
+using System.Text.Json.Nodes;
 
 namespace EdFi.DataManagementService.Core.External.Interface;
 
@@ -40,4 +41,10 @@ public interface IApiService
     /// DMS entry point for data model information from ApiSchema.json
     /// </summary>
     public IList<IDataModelInfo> GetDataModelInfo();
+
+    /// <summary>
+    /// Get the ordered list of dependencies
+    /// </summary>
+    /// <returns></returns>
+    public JsonArray GetDependencies();
 }