sqlline config dir is not getting generated in a dotfolder windows

[Avinash-Bhat]

the config directory in windows is not generated in .sqlline instead it's getting generated in the sqlline (note: no . prefix). This is in violation with the manual. in windows it should be stored in the same dir as that of -nix systems or into ${System.getProperty("user.home")}/AppData/Roaming/sqlline, the latter of which, is the usual place to store the rundirs.