Local Greenfield Client for Plugins (#2410)

* wip

* Local GreenField Client for Plugins

* support notification handlers being missing

* Initial support for scoped btcpay client

* test out scoped local client

* wip

* small fix

* Throw exception if using local greenfield client and it has not been implemented yet

* adapt based on new changes in BTCPay

* update

* fix tests

* Allow Local client to bypass authorization handler

* Add Misc endpoints to Local API Client

* Add new endpoints

* Apply code review changes

BTCPayServer/Controllers/GreenField/StorePaymentMethodsController.cs

@@ -26,6 +26,7 @@ namespace BTCPayServer.Controllers.GreenField
         [Authorize(Policy = Policies.CanModifyStoreSettings, AuthenticationSchemes = AuthenticationSchemes.Greenfield)]
         [HttpGet("~/api/v1/stores/{storeId}/payment-methods")]
         public ActionResult<Dictionary<string, GenericPaymentMethodData>> GetStorePaymentMethods(
+            string storeId,
             [FromQuery] bool? enabled)
         {
             var storeBlob = Store.GetStoreBlob();