Indent switch statements

[TrevorKarjanis]

Indentation for switch cases defaults to 0. Our rule should be the following to enforce four spaces.

'indent': ['error', 4, { SwitchCase: 1 }]

[jattasNI]

This seems like the right direction but we're confused why several codebases don't override our config but still indent their switch cases. @jattasNI to investigate and propose a rule change.