Add .py sample for calling YT Analytics API (v2)

Add JS sample for calling YT Analytics API (v2)

Remove duplicate print statement

Update nodejs quickstart example

Handle error case

Handle error case

For list action, video may not have localizations

Update auth libraries and make script improvements

Support more options, update auth flow

Delete obsolete code sample

Update auth libs, default privacy status

Fix typos in comments

Update script options, functionality, docs, auth

Update auth libraries and make script improvements

Update auth libraries, add options, documentation