feat(gitops): introduce workflows view [BE-12807] (#2391) (#2428)

Co-authored-by: Chaim Lev-Ari <chiptus@users.noreply.github.com>
Co-authored-by: Chaim Lev-Ari <chaim.lev-ari@portainer.io>

api/http/handler/gitops/workflows/summary.go

@@ -0,0 +1,35 @@
+package workflows
+
+import (
+	"net/http"
+
+	svc "github.com/portainer/portainer/api/gitops/workflows"
+	"github.com/portainer/portainer/api/http/security"
+	httperror "github.com/portainer/portainer/pkg/libhttp/error"
+	"github.com/portainer/portainer/pkg/libhttp/response"
+)
+
+// @id GitOpsWorkflowsSummary
+// @summary Summarize GitOps workflow status counts
+// @description Returns a count of workflows per status across all environments.
+// @description **Access policy**: authenticated
+// @tags gitops
+// @security ApiKeyAuth
+// @security jwt
+// @produce json
+// @success 200 {object} svc.StatusSummary
+// @failure 500 "Server error"
+// @router /gitops/workflows/summary [get]
+func (h *Handler) summary(w http.ResponseWriter, r *http.Request) *httperror.HandlerError {
+	securityContext, err := security.RetrieveRestrictedRequestContext(r)
+	if err != nil {
+		return httperror.InternalServerError("Unable to retrieve info from request context", err)
+	}
+
+	items, err := h.getWorkflows(cacheKey(securityContext, nil), securityContext, nil)
+	if err != nil {
+		return httperror.InternalServerError("Unable to retrieve workflows", err)
+	}
+
+	return response.JSON(w, svc.CountByStatus(items))
+}