YDB CLI unify used local paths

[kunga]

There are lots of different locations used by YDB CLI:

• ~/ydb/config/config.yaml for profiles configurations
• ~/.config/ydb/import_progress/ for saving progress
• ~/.ydb/token for default YDB token file
• ~/.ydb/default_profile for idn what
• ~/.yt/token for YT token

I think something else is also used

Using different file location for one tool is weird and wrong, I propose to put all the YDB CLI needed files into one .ydb folder.