[ENHANCEMENT] Backend has piping to update saved searches

[jcscottiii]

Resolves this TODO:

webstatus.dev/backend/pkg/httpserver/server.go

Lines 136 to 143 in 25acedc

	func (s *Server) UpdateSavedSearch(
	ctx context.Context, request backend.UpdateSavedSearchRequestObject) (
	backend.UpdateSavedSearchResponseObject, error) {
	return backend.UpdateSavedSearch400JSONResponse{
	Code: http.StatusBadRequest,
	Message: "TODO",
	}, nil
	}