Support .tsx files

[AlbertSmit]

When running structured lint on .tsx files, the following error pops up:

> poc@0.5.0 start /Users/albertsmit/Personal/samplerate-poc/poc
> structured lint && react-scripts start

structured lint

Linting your folders, files, imports and exports.

Options:
  --version  Toon versienummer                                       [booleaans]
  --help     Toon help                                               [booleaans]

{ index: 482, lineNumber: 30, column: 9, message: "'>' expected." }