refactor: rename dyplot.default.* files into dyplot.*

Refs: #61
2 jobs for 61-clean-the-dyplot-s3-method in 5 minutes and 7 seconds (queued for 3 seconds)
Status Name Job ID Coverage
  Check
passed check_devel_airGR_cran #268046
docker

00:05:07

passed check_devel_airGR_notcran #268047
docker

00:05:07