Rewrite the egg to support dev and stable versions, together with newer +1.16 installers.
Does not rely on their own API latest fetching, because it picks latest Github release that can include old pre-releases.
For 1.17 JPMS arguments, fix regex to match`^1\.(17|18|19|20|21|22|23)` or latest instead of only dot . minor versions, which is something I didn't notice in a previous PR. This should future proof it.