7x/highlevel namespace (#3772)

* Update code configuration for low level client to only generate methods for preferred HTTP methods

* Fixed locations to be nix friendly

* Removed alternative HTTP method named methods in the low level client

* progress commit

* Simplified CsharpMethodsWithQueryString

now we only yield methods for the preferred HTTP method

* progress commit

* progress commit

* can now use partials/include this should start cleaning up the cshtml files

* Able to introduce partial methods now

* Add partial views

* RequestDescriptorBase separate view

* moved descriptors to partials (initial stab)

* reindent generated code automatically

* Split name and namespace

* Request/Descriptors are no longer backed by CsharpMethods

* start cleaning up CsharpMethod

* PatchMethod on overrides is gone,

* Cleaned up code configuration a tad

* deduplication is now gone, marked aliases that were duplicate as deprecated

* In case of GET, OTHER prefer OTHER

* rebased against 7.x and reworked replace files into patch files

* skip params also on requestparameters and prefer plural source_includes

* reapply fix from #3700 to make sure virtual paths as root are supported again

* moved lowlevel client method into partial

* Moved methods to partials and no longer yield an async version, let the views handle that

* make sure ctx is passed correctly in async variants

* Low level client now has namespaces!

* ContentType now wired per namespace, cat only in this case

* started on generating the high level client methods as well

* status commit requestparameters are now per namespace too and introduce an actual namespace

* Continued working on making sure the methods on the highlevel client are generated and namespaced

* progress commit

* All methods are now generated

* Tests now uses namespaced methods

* progress commit

* things compile again

* remove some compiler warnings

* Found a way for cshtml to not report errors

* things compile again

* The generation of methods is now much more controlled

Introduced dedicated views and view models and we are reusing a whole
lot more:

* Add support for marking request so that the generated methods take TDocument

* Fix up tests now that custom constructors are automatically wired up

* requestparameters dependentupon, still now working

* Clean up files and codegenerator routines a tad

* Renamed final bits

* generators now in separate files

* update namespaces in ApiGenerator

Author: Mpdreamz

src/CodeGeneration/ApiGenerator/ApiGenerator.cs

@@ -0,0 +1,14 @@
+using System;
+using System.Threading.Tasks;
+using RazorLight;
+
+namespace ApiGenerator 
+{
+	/// <summary> This only exists to make the IDE tooling happy, not actually used to render the templates </summary>
+	public class CodeTemplatePage<TModel> : TemplatePage<TModel>
+	{
+		public override Task ExecuteAsync() => throw new NotImplementedException();
+
+		public Task Execute() => Task.CompletedTask;
+	}
+}