Suggest better name for package/class and plugin name if artifact id contains dashes

[GotoFinal]

Currently if you will try use same artifact id like example-plugin it will suggest invalid names for some fileds:

I think that it should remove all dashes -, and capitalize letter next to it - expect for package.
So at the end it should look like this:

Also it might be good idea to add a warning if you will use capital letter in package or artifact-name. Just foe newbies.