Enhance importer/render for making use of micromapping features

[Framstag]

See https://supaplexosm.github.io/strassenraumkarte-neukoelln/posts/2021-12-31-micromap-update

this could be an interesting blog article with many micro mapping features that show us a huge number of possible improvements to the importer and/or renderer. We should not follow the blog 1:1 but there are a number of features described that require feature we are possibly still missing.