Alerting: Refactor API handlers to use web.Bind (#42600)

* Alerting: Refactor API handlers to use web.Bind

* lint

pkg/services/ngalert/api/forked_testing.go

@@ -0,0 +1,27 @@
+package api
+
+import (
+	"github.com/grafana/grafana/pkg/api/response"
+	"github.com/grafana/grafana/pkg/models"
+	apimodels "github.com/grafana/grafana/pkg/services/ngalert/api/tooling/definitions"
+)
+
+// ForkedTestingApi always forwards requests to grafana backend
+type ForkedTestingApi struct {
+	grafana TestingApiService
+}
+
+// NewForkedTestingApi creates a new ForkedTestingApi instance
+func NewForkedTestingApi(grafana TestingApiService) *ForkedTestingApi {
+	return &ForkedTestingApi{
+		grafana: grafana,
+	}
+}
+
+func (f *ForkedTestingApi) forkRouteTestRuleConfig(c *models.ReqContext, body apimodels.TestRulePayload) response.Response {
+	return f.grafana.RouteTestRuleConfig(c, body)
+}
+
+func (f *ForkedTestingApi) forkRouteEvalQueries(c *models.ReqContext, body apimodels.EvalQueriesPayload) response.Response {
+	return f.grafana.RouteEvalQueries(c, body)
+}