Deprecate and point to `eslint-config-standard-with-typescript`

[voxpelli]

As the maintainers of eslint-config-standard-with-typescript has no intent on maintaining ts-standard I think the best strategy would be to deprecate this package and recommend people to use eslint-config-standard-with-typescript directly instead.

[voxpelli]

Ping @mightyiam @feross @rostislav-simonik @LinusU @theoludwig, what's are your thoughts on deprecating this package?

[mightyiam]

We do intend to maintain this package.

[mightyiam]

Will take some time, though. We're working around 3 hours per week.