Migrate TSLint to ESLint

[KamasamaK]

TSLint has been deprecated. The migration for vscode already happened with microsoft/vscode#87644. Extension authors are also encouraged to migrate according to the docs, so the samples should be migrated accordingly.

[jrieken]

Looks like @mjbvz and @octref have added most tslint.json-files and have therefore inherited ownership...

I agree that having uniform styles is good for our samples, but I think it is wrong to put that in each and every project, instead this should be enforced from the outside. This is important when we author those samples, but not when someone reads a sample.

[jrieken]

Thanks @mjbvz