Clear all HTTP request logs (#49)

* Create mutation to clear request logs

* Add UI for clearing all HTTP request logs

* Use consistent naming

* Explicitly delete only from http_requests

* Check if datebase is open

* Add confirmation dialog

pkg/reqlog/reqlog.go

@@ -99,6 +99,10 @@ func (svc *Service) SetRequestLogFilter(ctx context.Context, filter FindRequests
 	return svc.repo.UpsertSettings(ctx, "reqlog", svc)
 }
 
+func (svc *Service) ClearRequests(ctx context.Context) error {
+	return svc.repo.ClearRequestLogs(ctx)
+}
+
 func (svc *Service) addRequest(
 	ctx context.Context,
 	req http.Request,